Exhibit 99.1

AMC Mining Consultants (Canada) Ltd. BC0767129 — Suite 202, 200 Granville Street Vancouver BC V6C 1S4 CANADA — T        +1 604 669 0044 F        +1 604 669 1120 E        amcvancouver@amcconsultants.com W       amcconsultants.com

Technical Report

Prairie Creek Property Prefeasibility Update NI 43-101
Technical Report (Amended and Restated)

For Canadian Zinc Corporation

NORTHWEST TERRITORIES, CANADA

In accordance with the requirements of National Instrument 43-101 “Standards of Disclosure for Mineral Projects” of the Canadian Securities Administrators

Qualified Persons:

G.Z. Mosher, P.Geo.

H.A. Smith, P.Eng.

H. Ghaffari, P. Eng.

J. Huang, P.Eng.

A. Taylor, P.Geo.

T. Morrison, P.Eng.

AMC Project 715025

Effective date 31 March 2016

Revised date 30 September 2016

The Prairie Creek Mine Site

Revised Technical Report

This Technical Report was revised on 30 September 2016 to correct an error in the life-of-mine economic model presented in Section 22. The error caused an overstatement in gross smelter revenue to $3.7 billion from $3.3 billion over the projected 17-year life of the Prairie Creek Mine. The gross metal value of production (using the same assumptions) remains unchanged. The overestimation resulted from the inclusion in the economic model of smelter revenue for by-product metals in primary concentrates that may not be payable, depending on final concentrate contract terms. Only Sections 1, 2 (first paragraph only), 22 and 25 have been updated, the changes made reflecting the adjustments to the life-of-mine economic model and associated commentary.

All inputs into the economic model and all technical aspects of this report remain unchanged, including all mineral resource and reserve estimates, mining plans and production rates and estimates of capital and operating costs and assumptions on concentrate treatment charges and penalties.

No other changes or additions have been made to the original report which remains effective as of 31 March 2016.

Introduction

This Technical Report on the Prairie Creek Property, NWT, Canada (the Property), has been prepared by AMC Mining Consultants (Canada), Ltd. (AMC) of Vancouver, Canada, in conjunction with Tetra Tech Inc. (Tetra Tech), Vancouver, on behalf of Canadian Zinc Corporation (CZN) of Vancouver, Canada in accordance with the requirements of National Instrument 43-101 (NI 43-101), “Standards of Disclosure for Mineral Projects”, of the Canadian Securities Administrators (CSA) for Filing on CSA’s “System for Electronic Document Analysis and Retrieval” (SEDAR).

This report is an update to an amended and restated report titled Prairie Creek Property, Northwest Territories, Canada, Technical Report for Canadian Zinc Corporation, prepared by AMC and with an effective date of 15 June 2012 (2012 AMC Report) and a revised date of 23 July 2014. This report discloses the results of an updated Prefeasibility Study (PFS) based on updated Mineral Resources, and ongoing optimization projects and other engineering studies completed since the date of the 2012 AMC Report. The Mineral Resource estimate incorporates drill assay results that were not available at the time of the 2012 AMC Report.

Highlights

This updated 2016 Prefeasibility Study (2016 PFS), based on optimization work completed over the past three years, including the 2015 underground exploration program at Prairie Creek which increased total Measured and Indicated Resource tonnages by 32%, indicates a Base Case pre-tax Net Present Value (NPV) of $284 million using an 8% discount rate, with an Internal Rate of Return (IRR) of 23%, and a post-tax NPV of $155 million with a post-tax IRR of 18%.

The pre-tax and post-tax net present values, at 5% and 8% discount rates, and internal rates of return, are illustrated in the table below, all at a Canadian/US dollar exchange rate of 1.25:1 (except the Base Case which is also shown at an exchange rate of 1.375:1). The table also demonstrates the sensitivities of the Prairie Creek Project to zinc, lead and silver prices and to the Canadian/US dollar exchange rate.

1. Foreign Exchange assumed to be $1.375CAD:$1.00US on this line only

The 2016 PFS indicates average annual production of approximately 60,000 tonnes of zinc concentrate and 55,000 tonnes of lead concentrate, containing approximately 86 million pounds of zinc, 82 million pounds of lead and 1.7 million ounces of silver. The 2016 PFS indicates average annual earnings before interest, taxes, depreciation and amortization (EBITDA) of $64 million per year and cumulative EBITDA earnings of $1.0 billion over an initial mine life of 17 years, using Base Case metal price forecasts of US$1.00 per pound for both zinc and lead and US$19.00 per ounce for silver. Pre-production Capital Costs, including provision for a new all season road, are estimated at $244 million, including contingency, with payback of five years from first revenue.

Location, ownership and history

The Property consists of two surface leases and 12 mining leases totalling 7,487 hectares in area. The Property is situated in the Northwest Territories approximately 500 km west of Yellowknife in the Mackenzie Mountains at an elevation of 850 m above mean sea level. The Property is surrounded by, but is not included in, the Nahanni National Park Reserve (NNPR).

Year-round access to the Property is provided by aircraft utilizing a 1,000 m gravel airstrip immediately adjacent to the camp. The Property has also, in the past, been accessible by a winter road that extended 180 km from the Property to the Liard Highway; this access road is now planned to be all season and will need to be constructed to support full-time operation of the mine.

The Prairie Creek Property contains a high-grade, silver-lead-zinc-copper vein, and other lead-zinc deposit types that have been explored since the early 1900s and were developed by Cadillac Explorations Limited (Cadillac) from 1966 to 1983. The Prairie Creek Mine was developed and fully permitted and a processing plant, along with other surface infrastructure, built in the early 1980s, when a decline in metal prices resulted in the closure of the Mine in 1983 prior to commencement of production. San Andreas Resources Corporation became involved with the Property in 1992 and, through a series of agreements, together with a name change to Canadian Zinc Corporation in 1999, established an increasing interest in the Property, culminating in 2004 with the acquisition of a 100% interest in the Property and Mine site.

Geology and mineralization

The Property is located within a westward-thickening wedge of sedimentary carbonate rocks of mid-Proterozoic to mid-Jurassic age that was deposited along the paleo-continental margin of western North America (Mackenzie Platform). The Prairie Creek Embayment paleo-basin is interpreted to have developed as a half-graben controlled by a north-trending fault with down-drop to the west.

In the immediate area of the Property, north-south trending faulting and folding is apparent. The most significant fold structure is the fault bounded north-south doubly-plunging Prairie Creek anticlinal structure, which is the host to the Prairie Creek mineralization.

Four styles of base metal mineralization have been identified on the Property: quartz vein, stratabound, stockwork and Mississippi Valley-type. Only the first three styles have been found in potentially economic quantities to date. Base metal mineral showings occur along the entire 16 km north to south length within the main group of mining leases.

The most significant style of mineralization is the quartz vein-type, on which the underground workings have been developed, which contains the bulk of the currently defined Mineral Resource. The Main Quartz Vein (MQV) has been exposed in detail by underground development and diamond drilling over a strike length of 2.1 km (Main Zone). The MQV trends at an azimuth of approximately 20º and dips between vertical and 40º east, with an average dip of 65º. The MQV consists of massive to disseminated galena and sphalerite with lesser pyrite and tennantite-tetrahedrite in a quartz-carbonate-dolomite sheared matrix. The galena and tennantite-tetrahedrite also carry economically significant silver values. This vein style of mineralization has been located, through surface trenching, throughout the entire 16 km length of the mining leases.

Stockwork (STK) mineralization occurs as a series of narrow, massive sphalerite-galena-tennantite veins striking at about 40º azimuth that occupy tensional-dilatant fractures within a structural translation zone of the MQV. This mineralization has developed in sub-vertical tensional openings formed obliquely to, but also related to, the initial primary fault movement along the main vein structure. It has been exposed in both diamond drilling and underground development.

Stratabound Massive Sulphide (SMS) mineralization occurs intermittently at the base of the trend of the Prairie Creek vein system over a strike length of more than 3 km. SMS mineralization occurs as semi-massive sphalerite-galena-pyrite replacement located close to both the vein system and the axis of the Prairie Creek antiform, but has not yet been intersected by underground development. The MQV structure carries fragments of the SMS indicating the vein mineralization to be more recent in age.

Mississippi Valley-type (MVT) lead-zinc mineralization is exposed on the Property within surface showings of rock formations marginal to the basin and consists of cavity-filling type breccias in dolostone with host fragments rimmed with colloform sphalerite-marcasite-galena healed with carbonate. This type of mineralization does not form part of the current resource.

Exploration and data management

CZN, including its former name San Andreas Resources Corporation, has been involved with mineral exploration activity across the Prairie Creek Property since 1992. Somewhat limited exploration drilling had occurred and most of the underground development had been undertaken prior to CZN’s initial involvement. From 1992 to the end of 2015, CZN completed 296 surface and underground exploration diamond drillholes with an aggregate length of 78,587 m. In addition, 1,032 underground channel samples forming 365 composites from the three existing underground levels have been collected and analysed.

The main objective of exploration and underground development work has been focused on the Main Zone mineralization, where approximately 80% of the total drilling has been carried out.

Mineral Resource Estimate

The most recent Mineral Resource estimate, announced in a press release dated 17 September 2015, was estimated by AMC following completion of the successful 2015 underground exploration program at Prairie Creek, which increased the Measured and Indicated Mineral Resource tonnages by 32%.

A single block model was created to encompass the three mineral domains: MQV, STK and SMS. The summary results of the Mineral Resource estimate for the three zones combined, at a cut-off of 8% Zn equivalent (ZnEq), are shown below.

Mineral Resources are stated as of 10 September 2015.

Mineral Resources include those Resources converted to Mineral Reserves.

Stated at a cut-off grade of 8% ZnEq based on prices of $1.00/lb for both zinc and lead and $20/oz for silver.

Average processing recovery factors of 78% for zinc, 89% for lead, and 93% for silver.

Average payables of 85% for zinc, 95% for lead, and 81% for silver.

ZnEq = (grade of Zn in %) + [(grade of lead in % * price of lead in $/lb * 22.046 * recovery of lead in % * payable lead in %) + (grade of silver in g/t* (price of silver in US$/Troy oz/ 31.10348) * recovery of silver in % * payable silver in %)]/(price of zinc in US$/lb*22.046 * recovery of zinc in % * payable zinc in %).

$ Exchange rate = 1 CAD/USD.

Numbers may not compute exactly due to rounding.

The September 2015 Prairie Creek Mine Mineral Resource estimate was completed by Gregory Z. Mosher, P.Geo, Qualified Person (QP), as defined by National Instrument 43-101 (NI 43-101) of AMC Mining Consultants (Canada) Ltd.

Mineral Reserve Estimate

The September 2015 Measured and Indicated Mineral Resource was subsequently converted into a new Mineral Reserve estimate of 7.6 million tonnes of Proven and Probable Reserves at a combined grade of 17% Pb and Zn plus 128 g/t Ag, which represents a 46% increase in Reserve tonnage compared to the 2012 PFS. The estimation of Mineral Reserves by AMC is shown below.

2016 Mineral Reserves are as of 31 March, 2016 and based on a design cut-off grade of 12% ZnEq for LHOS, 11% ZnEq for DAF, an incremental stoping cut-off grade of 9.7% ZnEq and 7.1% ZnEq for development ore.

Cut-off grades are based on a zinc metal price of $1.00/lb, recovery of 75% and payable of 85%, a lead metal price of $1.00/lb, recovery of 88% and payable of 95%, and a silver metal price of $17/oz, recovery of 92% and payable of 81%.

Exchange rate used is C$1.25 = US$1.00.

Average unplanned dilution and mining recovery factors of 14% and 95%, respectively, for LHOS, and 6% and 95%, respectively, for DAF are assumed.

The March 2016 Prairie Creek Mine Mineral Reserve estimate was prepared by H. A. Smith, P.Eng, Qualified Person (QP), as defined by National Instrument 43-101 (NI 43-101) of AMC Mining Consultants (Canada) Ltd.

Mining

The mine will be an underground operation, based primarily on the MQV and mining an average of 1,350 tonnes per day over a 17-year mine life. During full production, approximately 485,000 tonnes of ore per year will be mined.

Adits were previously driven on three levels: the 970 mL, the 930 mL and the 883 mL, totalling approximately 5 km of underground workings. Access for mining will be through an enlarged 883 mL portal and adit with secondary access through the 930 mL. The 970 mL penetrates the topmost limits of the MQV only and is not part of the current mine plan. As mining progresses to depth, ore from the MQV will be supplemented by ore from the deeper SMS deposit, both deposits being accessed by a common ramp development.

Mining will be by longhole open stoping (LHOS) with paste backfill. Mechanized drift-and-fill (DAF) will be used for the SMS ore, also with paste fill. The plan and objective is to use 100% of flotation tailings as backfill.

Ground conditions in existing development underground are good and the existing workings have stood unsupported for thirty years with minimal bolting. CZN commissioned a geotechnical program at the end of 2013, including mapping and examination of drill core. This program demonstrated that the ground is amenable to longhole open stoping and the results of the program were used for rock support design.

The new mine plan envisages slashing out of some of the existing development in order to establish two spiral ramps to access deeper levels. The existing 883 mL adit will be enlarged to 4.5 x 4.5 m; two ramps will be driven downward from this level and one upward to access the MQV and SMS ores. Drifts will be driven on the MQV north and south from the ramp access points to the strike limits of the ore body. Stoping will begin at the ore limits and retreat to the ramp access points. Pre-production development is expected to take approximately 18 months, before stope ore becomes available as mill feed. This work will be performed by a contractor. On completion of the contracted scope of work, CZN will have the options of taking over the work itself or continuing with contract mining.

The mine will be wet and managing groundwater will be a significant aspect of the operation. When in full production, it is estimated that the mine will produce up to 120 L/s of water. The majority of this water will be collected through pre-drainage boreholes and pumped to surface, avoiding contamination. All water discharged from the mine will either be sent to the mill as process water, pumped into the existing impoundment pond, originally planned for tailings storage, which will be modified into a two-cell water storage pond, or directly treated in a new water treatment plant.

CZN anticipates that, because of the high concentrate mass pull, even with 100% disposal of tailings underground as paste fill, some shortfall in backfill volume may occur. Any shortfall will be made up with Dense Media Separation (DMS) float material and development waste rock. Filtered tailings will be stored in a building on surface during times when no stopes are available for backfill. Development waste and DMS float material will be stored in a newly created Waste Rock Pile north of the plant site.

Metallurgy and processing

Metallurgical tests conducted to date have proved positive. Reasonably good metal recoveries have been achieved with both sulphide and oxide material, with a cyanide-free reagent suite.

According to the test results the overall average grade of the blended lead sulphide/oxide concentrate is anticipated to be 67% lead, with an approximately 88% average recovery of total lead in the plant feed. The zinc sulphide concentrate is estimated to be 58% zinc, with an approximately 83% recovery of the total zinc in the plant feed. An average of 87% of the total silver values in the plant feed is anticipated to be recovered within the lead and zinc concentrates. The impurities of antimony, arsenic and mercury are expected to report to both concentrates.

A complete processing plant/concentrator was substantially constructed prior to project shutdown in 1982, together with a 1.5 million tonne capacity tailings impoundment, power plant, and water treatment plant. CZN plans to rehabilitate and upgrade the processing plant, power plant, and water treatment plant.

The current mill crushing facilities have a 1,500 tpd capacity, with an installed jaw crusher, short-head cone crusher, double-decked screen, and conveyor systems feeding a 2,000 t fine ore bin.

A new dense media separation (DMS) plant, with a nominal feed rate of 58 tph, will be installed downstream of the crushing circuit to process 15-mm to + 1.4-mm sized material. Indications from metallurgical testing are that the DMS plant is expected to reject an average of approximately 27% of the feed as waste at minimal metal losses. Milling feed input rates of 1,200 to 1,400 tpd are anticipated; after passing through the DMS plant, the material to be processed in the grinding/flotation circuit of the mill is estimated to be approximately 960 tpd.

Site infrastructure

As the Mine was fully permitted but never achieved production, existing site infrastructure is substantial; these facilities will be utilized and upgraded where possible. This includes upgrading the existing mill, administration building, workshops, sewage treatment plant, diesel storage tank farm, warehouses and accommodation facilities.

The mill will require an electrical upgrade, addition of a thickener, new flotation cells, a reagent storage and mixing facility, a concentrate storage and loadout facility, an on-stream analyzer and control system, and rehabilitation of the building envelope. The new DMS circuit will be added to the north side of the mill and the reagent mixing area and concentrate storage and loadout facility will be added to the south side of the mill. A new paste backfill plant is proposed to be built next to the mine portal.

Five new 1.5 MW diesel powered generator units will provide power and heat for the site. These power generator units will be located within the existing mill powerhouse after removal of the obsolete units currently in place. Maximum power load for the site is estimated at 5.2 MW. The new generators will be outfitted with heat recovery systems in order to maximize energy efficiency. The waste heat from the generators will be used to heat the surface facilities and mine air. Since the Mine will be accessed by an all season road, dual-fuel generators utilizing diesel/LNG are an option to consider depending on economics at the time of purchase.

Tailings from the mill will be placed permanently underground as paste backfill, produced in a new paste backfill plant, and augmented by DMS reject material in the event of any volume shortfall. The majority of DMS reject and mine development material will be placed in a newly created Waste Rock Pile facility located north of the mill off the Prairie Creek floodplain. Although the waste rock is considered non-acid generating due to its high content of carbonate material, appropriate precautions will be taken to prevent and mitigate any leaching that may occur from surface runoff through the waste rock pile.

A 150-person camp and cookhouse exists on the site, but most of the buildings have deteriorated beyond economical repair. They will be demolished and will be replaced by a new modular camp adjacent to the upgraded administration building complex.

The site water management plan for the Prairie Creek Mine proposes the reconfiguration of the present tailings impoundment pond into a two-celled Water Storage Pond connected to the mine and mill via piping that also connects to a new Water Treatment Plant, and an exfiltration pipe in the bed of Prairie Creek to provide discharge of the treated waters. The water management system also includes maintaining the real-time flow measurement gauges presently installed in Prairie Creek upstream of the site.

Access road and transportation plan

The Prairie Creek Mine was originally accessed by a 180 km winter road connecting to the Liard Highway (NWT Highway #7). Canadian Zinc currently holds all land use permits and water licences required for the construction and operation of a revised 184 km winter access road that connects the Prairie Creek Mine to the Liard Highway, and for the construction of two transfer and staging facilities along the road, one near the Liard River crossing and the second inside the Park at about the half-way mark.

The access road, part of which passes over Crown land and part through the expanded Nahanni National Park Reserve, is multi-jurisdictional and the Company has received from both the Water Board and Parks Canada all necessary road related permits and licences related to their respective jurisdictions.

In January 2013, the Mackenzie Valley Land and Water Board (MVLWB) issued LUP MV2012F007 for a period of five years, which permits the construction, maintenance, operation and use of the winter road connecting the Prairie Creek Mine to the Liard Highway. This permit allows the outbound transportation of the zinc and lead concentrates to be produced at the mine and the inbound transportation of fuel and other supplies during the actual operation of the Prairie Creek Mine. The Land Use Permit and Water Licence apply to the portion of the winter road traversing Crown Land, which is under the jurisdiction of the Water Board. There are two sections to this portion of the road, the first being 17 kilometres of road from the mine site to the point where the road enters the NNPR, and the second being 80 kilometres of road from the eastern boundary of the NNPR to the Liard Highway.

In September 2013, the Company received from Parks Canada permits (Parks2012_W001 WL and Parks2012-L001 LUP), both valid for a period of five years valid until August 2018. The permits authorize road access through the NNPR to connect sections of road outside the Park permitted by the MVLWB.

The transportation plan utilized in the 2012 PFS envisaged the use of the access road only in the winter months of each year, both for the outbound transportation of concentrates and for the inbound transportation of equipment and supplies, including diesel fuel. This winter road plan would necessitate a large investment in working capital to finance consumables and supplies and also a large build-up in concentrate inventory awaiting transportation and sale.

In April 2014, the Company submitted an application to the MVLWB and to Parks Canada for Land Use Permits to permit the upgrade of the current winter access road to all season use. The application is now undergoing environmental assessment before the Mackenzie Valley Review Board (MVRB).

Mining operation based on an all season road access, compared to winter road only access, will:

The all season road will reduce energy costs and also enable the consideration of more environmentally friendly alternative energy sources. Local gas fields in the area may be producing LNG in the near future, which may provide an opportunity to reduce reliance on diesel fuel. An all season road would also have environmental and safety benefits, in that spreading out the trucking schedule over the full year would avoid high or congested traffic in winter months, therefore lowering the risk of accidents or spills.

Transportation over the all season road will utilize an ice bridge in winter and a barge in summer to cross the Liard River.

Canadian Zinc currently holds all the significant regulatory permits for the construction and use of the access road in winter but does not yet hold the permits for the all season road. The Company anticipates that the environmental assessment process for the proposed all season road permit application will take most of the year 2016.

Upon reaching the Liard Highway, concentrates will be trucked to the railhead at Fort Nelson and transported by rail to the port of Vancouver for shipment to smelters overseas. Inbound freight will be trucked as backhaul over the same route. A staging area will be established at the junction of the mine access road and the Liard Highway. A loading area will be constructed at the railhead in Fort Nelson.

Transportation costs included in the 2016 PFS have been estimated at $65 per tonne of ore mined, which includes approximately $33/t for road/truck transportation, $24/t for rail and trans-loading and $8/t for ocean freight.

Concentrate marketing

The Prairie Creek Project will produce three types of concentrate: zinc sulphide, lead sulphide and lead oxide. CZN plans to combine the two lead concentrates into one concentrate at the mill site. The concentrates will then be transported in enclosed haul trucks via the mine access road and Liard Highway to Fort Nelson, and from there by rail to the Port of Vancouver.

Canadian Zinc has signed a Memorandum of Understanding (MOU) with each of Korea Zinc and Boliden for the sale of zinc and lead concentrates. The MOUs set out the intentions of Canadian Zinc and each of Korea Zinc and Boliden to enter into concentrate sales agreements for the concentrates to be produced from the Prairie Creek Mine on the general terms set out in the MOUs, including commercial terms which are to be kept confidential.

The sale agreements will account for all of the planned production of zinc concentrate and about half of the planned production of lead concentrate for the first five years of operation at the Prairie Creek Mine. The sales agreements will provide that treatment charges will be set annually at the annual benchmark treatment charges and scales, as agreed between major smelters and major miners.

Payables, penalties and quotational periods will be negotiated in good faith annually during the fourth quarter of the preceding year, including industry standard penalties based on indicative terms and agreed limits specified in each MOU.

Treatment and refining charges, including deductibles, payable and penalties, vary with smelter location and individual smelter terms and conditions. The Economic Model used in the 2016 PFS has been prepared assuming average blended indicative treatment charges of US$212 per tonne for zinc sulphide concentrates and US$195 per tonne for lead concentrates, with industry standard penalties, including mercury penalties of US$1.75 for each 100 ppm above 100 ppm Hg per tonne of concentrate.

Project execution

The mine start-up schedule is significantly influenced by the seasonal weather conditions in the Northwest Territories. The project schedule comprises one year of detailed engineering, including the completion of permitting and design of the all season road, one year to procure long-lead-time items and prepare the site, followed by one year of site completion and mine development. Mobilization will initially be by winter road, concurrent with construction of the all season road. The later shipment of concentrates and production supplies will be on the all season road.

Permitting, environmental and community

The Prairie Creek Mine is located in an environmentally sensitive watershed of the South Nahanni River and proximal to the Nahanni National Park Reserve. As a result, particular attention has been paid by the Company and by regulators to potential impacts on water quality that may be caused by Project construction and operations.

CZN currently has a number of permits and licences for both exploration and mine operations issued by the MVLWB under the Mackenzie Valley Resource Management Act. In addition, CZN also has a LUP and Water Licence from Parks Canada for the portion of an operations winter road that crosses the NNPR.

The main Licence is the Type “A” Water Licence (MV2008L2-002) which was issued by the MVLWB on 8 July 2013 that permits CZN to conduct mining, milling and processing activities at the Prairie Creek Mine Site, use local water, dewater the underground mine and dispose of waste from mining and milling. Other Land Use Permits and Water Licences provide for winter road, mine site and transfer related facilities.

Water Licence MV2001L2-0003 and LUP MV2012C0008 allow CZN to continue with underground exploration prior to operations. LUP MV2012C0002 provides for surface exploration and diamond drilling at sites throughout the Prairie Creek property.

A Land Use Permit application for an all season road was applied for in April 2014 to the MVLWB and is currently in the Environmental Assessment Process with the Mackenzie Valley Review Board. The Environmental Assessment is well advanced and is expected to conclude prior to year-end.

Prior to the main licences being issued in 2013, CZN had been involved, since the passage of the Mackenzie Valley Resource Management Act in 1999, in numerous regulatory processes to obtain various Land Use Permits and Water Licences for exploration and development at the Prairie Creek Mine site. Regulatory processes included both normal-course permitting and numerous Environmental Assessments.

Innovative water management practices are necessary at the Prairie Creek Mine during operations due to the nature of the discharge and the receiving environment upstream of a national park. The volume of water for discharge will vary seasonally, being greatest in summer. Flows in Prairie Creek are also variable, being very low in winter and fluctuating in summer. Therefore, storage of water in a large pond on site will be maximized in winter, and treated water discharge will be proportionately tied to creek flows to minimize receiving water concentrations, meet Water Licence limits and protect the ecosystem downstream. A variable load discharge (VLD) approach to water management was developed and accepted during the regulatory process. A Water Licence to operate the Mine was issued in 2013 by the MVLWB with the construction period being regulated by ‘end-of-pipe’ effluent quality criteria, followed by VLD to meet receiving water objectives during operations. Real-time flow measurements upstream in Prairie Creek are planned in order to track the allowable load for discharge. A seasonal schedule for treated mine and mill water discharge will apply based on the site water balance; although the actual discharge rates will be based on the daily on-site analysis of treated water sentinel parameters, and on flows in Prairie Creek, which may vary on an hourly basis. Discharge will be via an exfiltration trench below the bed of Prairie Creek that will promote mixing and attenuation of parameter concentrations to meet site specific water quality objectives.

The Prairie Creek Mine site today is surrounded by the Nahanni National Park Reserve. The original NNPR was created in 1972 for the specific purpose of setting aside the South Nahanni River for wilderness recreation. Exploration activity at Prairie Creek had been ongoing for many years prior to 1972, with underground development being well advanced at that time. In June 2009, the NNPR was expanded to include the entire watershed of the South Nahanni River. However, the Prairie Creek site and a 300-km² surrounding area were excluded from the Park. An amendment to the Canada National Parks Act, provided for a right of access through the expanded Park into the Prairie Creek area. Recognizing the need to work closely together, in 2008 CZN and Parks Canada entered into a MOU that formalized the intent of both parties to work collaboratively, within their respective areas of responsibility, authority and jurisdiction, to achieve their respective goals of an expanded NNPR and an operating Prairie Creek Mine. The MOU was renewed in 2015 for another five years.

CZN completed a detailed socio-economic assessment in support of the Project. The study concluded that the Prairie Creek Mine will be a relatively modest project in a region of the NWT that has limited economic prospects. The majority of the economic and social benefits will be generated through the participation of local labour and businesses in the area, including the communities of Nahanni Butte, Fort Simpson and Fort Liard.

In 2011, Canadian Zinc signed important Impact and Benefits Agreements with each of Nahanni Butte Dene Band and Liidlii Kue First Nation (Fort Simpson), both part of the Dehcho First Nations. Later that year, CZN negotiated a Socio-Economic Agreement with the Government of the Northwest Territories (GNWT), covering social programs and support, commitments regarding hiring and travel, and participation on an advisory committee to ensure commitments are effective and are carried out.

Employment

Approximately 150 people are expected to be employed on site during initial project construction. A new accommodation block will be constructed at site to accommodate this workforce.

During operations the Mine will employ a total of approximately 316 people on payroll, including truckers, with half of the employees being on-site at any one time, and with an additional 28 off-site in the Fort Liard and Fort Nelson areas. Personnel will work a regular rotation on site, with rest periods off site, to be determined, with transport by charter flights to the existing on-site 1,000 m gravel airstrip. Canadian Zinc’s hiring policy and commitments under its signed Impact and Benefits Agreements are to give preference to qualified local community residents, followed by northern residents. Training programs will be organized to further promote and maximize local aboriginal employment.

Project metrics

Note: Rounding of numbers may influence totals.

Capital and operating costs

The general breakdown of the Pre-Production Capital Cost estimate for the Prairie Creek Project is indicated in the following table:

Pre-Production Capital Cost refers to capital costs incurred until the first processing of mined ore, and have been estimated at a total of $216 million, excluding contingency, and $244 million including a contingency of $28 million, excluding working capital.

Based on proposals or quotations received, a number of capital items were provided on a lease-to-purchase basis. The main items included on a capital lease basis are: diesel generators; water treatment plant; paste plant; and some process equipment. The lease costs of such items incurred in the pre-production period are included in pre-production capital costs; lease costs incurred after production start-up are included in sustaining capital.

Working Capital has been estimated at $30 million, excluding contingency, and $36 million including a contingency of $6 million.

Sustaining Capital over the full life of the mine has been estimated at $70 million, of which approximately 90% is incurred in the first five years, and relates largely to ongoing mine development as the mine is expanded to deeper levels and to the remaining balance of capital lease payments. The financial model indicates that the sustaining capital can be financed from operational cash flows.

The contingency level of accuracy of the capital cost estimates ranges between approximately 5% and 25%, with a blended contingency factor of plus or minus 12.7%. The cost estimate of major equipment packages was determined via a bidding process conducted by Tetra Tech in 2015 and is considered a firm price. Where no bid price was obtained the contingency was determined based upon professional judgement.

The general breakdown of the Operating Cost Estimate for the Prairie Creek Project is indicated in the following table.

* includes truck/rail/handling/shipping

The following list summarizes key project assumptions used to develop the operating costs, which are in 2016 constant dollars:

Economic analysis

The Base Case economic model has been developed using long-term metal price assumptions of US$1.00/lb zinc, US$1.00/lb lead, US$19.00/oz silver and an exchange rate of $1.25CDN:$1.00US. These long-term price assumptions are based on consensus price forecasts published by Consensus Economics Inc. as at February 2016, and a review of market commentary published by various services, including the International Lead and Zinc Study Group, CRU, Metals Bulletin Research, Wood Mackenzie, and other industry sources as discussed in Section 19.

A sensitivity analysis was conducted on the Project model to evaluate its robustness against variations in financial parameters, specifically Base Case metal prices +/- 10% and the Base Case foreign exchange rate +/- 10% and +4%. The financial analysis centering on the Base Case, showing average annual EBITDA, NPV (at 8% and 5% discount rates), IRR and payback periods, on a pre-tax and post-tax basis is presented in the following table.

1. Metal prices varied plus/minus 10% and exchange rate unchanged.

2. Exchange rate varied plus/minus 10% and plus 4%, and metal prices unchanged.

A stressed case sensitivity analysis using assumed metal prices of US$0.80/lb for zinc and lead and US$17/oz for silver, and an exchange rate of CDN$1.40:US$1.00, would indicate a pre-tax NPV (8%) of $92 million and IRR 13% (post-tax NPV (8%) of $24 million and IRR 10%). Using the average metal prices for the three years ended 31 March 2016 of US$0.90/lb for zinc; US$0.89/lb for lead and US$18.27 for silver, and an exchange rate of CDN$1.33:US$1.00 would indicate a pre-tax NPV (8%) of $199 million and IRR 19% (post-tax NPV (8%) $97 million and IRR 14%).

Recommendations

As part of its assessment in the Technical Report, AMC has recommended that:

The above recommendations include both optional and essential items. The cost of essential items is estimated at $9M. The cost of optional items is estimated at $3M. Details are outlined in the body of the report in Section 26.

Conclusions

The Prairie Creek Property contains a high-grade, silver-lead-zinc-copper vein along with other lead-zinc deposits and deposit types. The Base Case economic model indicates a robust project at consensus forecasts for the long-term prices of lead and zinc, generating a pre-tax undiscounted cumulative cash flow of $710 million, a pre-tax NPV (8%) of $284 million with an IRR of 23% and a post-tax NPV of $155 million with a post-tax IRR of 18%. Additional project optimization, as recommended in this report, would further enhance the economics.

The development of the Prairie Creek mine offers significant economic advantages. There is broad support among aboriginal organisations and communities in the Dehcho region for the direct benefit and economic stimulus that the mine would bring to this region of the Northwest Territories. Its envisaged operation presents a unique opportunity to enhance the social and economic well-being of the surrounding communities. There will be approximately 220 direct full time jobs. In addition, there will be many indirect business and employment opportunities, related to transport, supply of the Mine Site and environmental monitoring and management.

The Prairie Creek Project is considered to be a viable project, based on the Mineral Reserves, mine plan, and production and economic parameters determined within the 2016 PFS. AMC recommends that Canadian Zinc proceed with the development of the Prairie Creek Project.

Contents

Tables

Figures

LIST OF ABBREVIATIONS

This Technical Report was revised on 30 September 2016 to correct an error in the life-of-mine economic model presented in Section 22. The error caused an overstatement in gross smelter revenue to $3.7 billion from $3.3 billion over the projected 17-year life of the Prairie Creek Mine. The gross metal value of production (using the same assumptions) remains unchanged. The overestimation resulted from the inclusion in the economic model of smelter revenue for by-product metals in primary concentrates that may not be payable, depending on final concentrate contract terms. Only Sections 1, 2 (first paragraph only), 22 and 25 have been updated, the changes made reflecting the adjustments to the life-of-mine economic model and associated commentary.

All inputs into the economic model and all technical aspects of this report remain unchanged, including all mineral resource and reserve estimates, mining plans and production rates and estimates of capital and operating costs and assumptions on concentrate treatment charges and penalties.

No other changes or additions have been made to the original report which remains effective as of 31 March 2016.

This Technical Report on the Prairie Creek Property (the Property), located approximately 500 km west of Yellowknife in the Northwest Territories, Canada, has been prepared by AMC Mining Consultants (Canada) Ltd. (AMC) of Vancouver, Canada, in conjunction with Tetra Tech Inc. (Tetra Tech), Vancouver, on behalf of Canadian Zinc Corporation (CZN or the Company or Canadian Zinc) of Vancouver, Canada in accordance with the requirements of National Instrument 43-101 (NI 43-101), “Standards of Disclosure for Mineral Projects”, of the Canadian Securities Administrators (CSA) for lodgment on CSA’s “System for Electronic Document Analysis and Retrieval” (SEDAR).

This report discloses the results of an updated Prefeasibility Study (PFS) based on a re-estimate of the Mineral Resources, and additional engineering information. The Mineral Resource estimate incorporates drill assay results that were not available at the time of the previous estimate in May 2012. This report is an update to a report titled Prairie Creek Property, Northwest Territories, Canada, Technical Report for Canadian Zinc Corporation, prepared by AMC and with an effective date of 15 June 2012 (2012 AMC report) and revised in 23 July 2014.

CZN is the 100% owner of the Property, which consists of two surface leases and twelve mining leases. The Property assets include the Prairie Creek Mine, a processing plant, various mine and plant-related surface infrastructures, various earth moving and mining equipment, and numerous mineralized occurrences that are at various stages of exploration and development.

CZN is a publicly traded mining exploration company that is based in Vancouver, Canada and with offices in Toronto and Fort Simpson (NWT). CZN is listed on the Toronto Stock Exchange under the trading symbol “CZN”, on the OTCQB Venture Marketplace in the United States under trading symbol “CZICF”, and under the symbol "SAS" on the Frankfurt Exchange. The prime asset controlled by CZN is the Prairie Creek Property.

Prior to 25 May 1999, CZN was named San Andreas Resources Corporation.

The names and details of persons who prepared, or who assisted the Qualified Persons (QPs) in the preparation of this Technical Report are listed in Table 2.1. These are a mix of independent and non-independent QPs as there has not been a material change since the 2012 report and independence as defined in NI 43-101 is not required in this case.

Qualified Persons responsible for the preparation of this Technical Report