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United States
Marigold Mine

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 Location:
117 km W from Elko, Nevada, United States
  Address:
32255 Marigold Mine Rd, PO Box 160
Valmy
Nevada, United States
89438
Phone  ...  Subscription required
Fax1-775-635-2551
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News
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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Gold
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine Life10 years (as of Jan 1, 2022)
DENVER, CO, Nov. 28, 2022. - SSR Mining Inc. is pleased to announce results from 316 drillholes completed at the Marigold mine in Nevada, USA, for the period from October 2021 to August 2022 at the New Millennium, Trenton Canyon, and Buffalo Valley oxide targets. The continued exploration success at these key exploration targets has the potential to drive Mineral Reserve and Mineral Resource growth that can be incorporated into an updated Technical Report Summary for Marigold, which is expected in 2023. The 2023 Marigold TRS will evaluate the potential to add New Millennium to the life of mine plan. Future studies will evaluate mining and processing opportunities at the Trenton Canyon and Buffalo Valley satellite targets located four and ten kilometers south of New Millennium, respectively.

Owners

Source: p. 58
CompanyInterestOwnership
SSR Mining Inc. 100 % Indirect
SSR Mining holds a 100% interest in Marigold through its wholly-owned subsidiary, Marigold Mining Company.

Contractors

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Deposit Type

  • Carlin-type
  • Sediment-hosted

Summary:

Marigold is located in north-central Nevada within the Basin and Range physiographic province bounded by Sierra Nevada to the west and the Colorado Plateau to the east. The western part of the North American continent has undergone a complex history of extensional and compressional tectonics from the Proterozoic through to the Quaternary. Predominantly Paleozoic rifting and basin subsidence led to the formation of thick (hundreds of meters) passive margin sedimentary sequences and repeated inter plate collisions caused accretion of arc related volcanics and ocean floor rocks, which were pushed together with the basin sediments to form fold and thrust belts. Subsequent extension related to subduction and back arc basin rifting resulted in the development of Basin and Range topography. Crustal thinning caused by the extension allowed the rise of magma close to the surface, which produced extensive and voluminous magmatism from the middle Eocene to late Miocene. Crustal extension with bimodal (mafic and felsic) volcanism occurred in the region from the late Miocene to the present day.

The property is in the Battle Mountain mining district on the northern end of the Battle Mountain- Eureka trend, a conspicuous lineament of sedimentary-hosted gold deposits. The Battle Mountain district hosts numerous mineral occurrences, including porphyry copper–gold, porphyry copper–molybdenum, skarn, placer gold, distal disseminated silver-gold, and Carlin-type gold systems. Gold at ........

Mining Methods

  • Truck & Shovel / Loader

Summary:

Marigold uses open pit mining methods at a life-of-mine sustained mining rate of approximately 250,000 tonnes per day. The mine conducts conventional drilling and blasting activities with a free face trim row blast to ensure stable wall rock conditions. Mining occurs on 15.2-meter benches. Loading operations are currently performed using one electric shovel and three hydraulic shovels. Waste and ore haulage is performed with a fleet of 300 tonne class haul trucks.

Drilling and blasting occurs on 15.2 m benches. One grade control sample is taken from each blasthole with the sub-drilling excluded. Mining occurs on 15.2 m benches when prestripping waste or mining ore areas with the P&H electric shovel. 7.6 m benches are mined using the smaller hydraulic shovels to minimise the dilution that would otherwise occur from dozing a 15.2 m high face to these smaller shovels Blasting is done with an ammonium nitrate and fuel oil (ANFO) blend and a sensitised ANFO emulsion. The ore control mark-out procedure includes blast movement analysis for 90% of ore production blasts.

The Marigold geotechnical management plan (GMP) includes highwall monitoring using three radar systems which provide full coverage for the (largest) Mackay pit, or can be deployed in smaller pits, if required. Routine monitoring of waste dumps, leach pads and inactive pits using INSAR data is performed by a third party on a monthly basis.

Loading operations are currently performed us ........

Crushing and Grinding

Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.

Production:

CommodityUnits2023202220212020201920182017
Gold koz  ......  Subscription required ^  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required205202
All production numbers are expressed as metal in doré. ^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202220212020201920182017
Total tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required74,039 kt70,431 kt69,011 kt
Ore tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required25,676 kt27,526 kt25,589 kt
Waste  ......  Subscription required  ......  Subscription required  ......  Subscription required48,364 kt42,907 kt43,422 kt
Tonnes processed  ......  Subscription required  ......  Subscription required  ......  Subscription required
Mining scale, tpd  ......  Subscription required  ......  Subscription required  ......  Subscription required
Processing scale, tpd  ......  Subscription required  ......  Subscription required  ......  Subscription required
Mining days per year  ......  Subscription required  ......  Subscription required  ......  Subscription required
Processing days per year  ......  Subscription required  ......  Subscription required  ......  Subscription required
Stripping / waste ratio  ......  Subscription required  ......  Subscription required  ......  Subscription required1.9 1.6 1.7
Daily mining rate  ......  Subscription required  ......  Subscription required  ......  Subscription required200,000 t200,000 t200,000 t
Subscription required - Subscription is required.

Reserves at December 31, 2022:
The Mineral Reserves are reported at a cut-off grade of 0.065 g/t payable gold (gold assay factored for metallurgical recovery, royalty, and net proceeds).
The Mineral Resource estimate is based on an optimised pit shell at a cut-off grade of 0.065 g/t payable gold (gold assay factored for recovery, royalty, and net proceeds).

CategoryOreTypeTonnage CommodityGradeContained Metal
Probable Leach Pad kt Gold 314 koz
Probable In-Situ (OP) 185,703 kt Gold 0.48 g/t 2,842 koz
Indicated In-Situ (OP) 115,294 kt Gold 0.43 g/t 1,611 koz
Inferred In-Situ (OP) 21,680 kt Gold 0.36 g/t 249 koz

Commodity Production Costs:

CommodityUnits202220212020201920182017
Cash costs (sold) Gold USD  ......  Subscription required†  ......  Subscription required†  ......  Subscription required†  ......  Subscription required† 723 / oz†   647 / oz†  
All-in sustaining costs (sold) Gold USD  ......  Subscription required ^†  ......  Subscription required†  ......  Subscription required†  ......  Subscription required† 974 / oz†   896 / oz†  
^ Guidance / Forecast.
† Net of By-Product.
Subscription required - Subscription is required.

Operating Costs:

Units20192018201720162015
OP mining costs ($/t mined) USD 1.741.761.681.51.56
Processing costs ($/t milled) USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Financials:

Units2022202120202019201820172016
Sustaining costs M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 31   20.4   24.5  
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 52.9   20.4   30.5  
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 250.3   250.8   256.8  
Operating Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 43.4   64.9   79.4  
Pre-tax Income M USD  ......  Subscription required  ......  Subscription required 26.2   64   73.7  
Subscription required - Subscription is required

Water Supply
Source: Subscription required

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Heavy Mobile Equipment as of December 30, 2021:
HME TypeModelSizeQuantity
Dozer (crawler) ....................... Subscription required ....................... Subscription required
Dozer (rubber tire) ....................... Subscription required ....................... Subscription required
Drill ....................... Subscription required ....................... Subscription required
Drill (blasthole) ....................... Subscription required 222 mm ....................... Subscription required
Grader ....................... Subscription required ....................... Subscription required
Loader ....................... Subscription required ....................... Subscription required
Scraper ....................... Subscription required ....................... Subscription required
Shovel (hydraulic) ....................... Subscription required ....................... Subscription required
Shovel (hydraulic) ....................... Subscription required ....................... Subscription required
Shovel (rope) ....................... Subscription required ....................... Subscription required
Truck (fuel / lube) ....................... Subscription required
Truck (haul) ....................... Subscription required 300 t ....................... Subscription required
Truck (haul) ....................... Subscription required 300 t ....................... Subscription required
Truck (haul) ....................... Subscription required ....................... Subscription required
Truck (water) ....................... Subscription required ....................... Subscription required
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jun 5, 2022
....................... Subscription required ....................... Subscription required Subscription required Jun 5, 2022
....................... Subscription required ....................... Subscription required Subscription required Jun 5, 2022
....................... Subscription required ....................... Subscription required Subscription required Jun 5, 2022
....................... Subscription required ....................... Subscription required Subscription required Jun 5, 2022
....................... Subscription required ....................... Subscription required Subscription required Jun 5, 2022
....................... Subscription required ....................... Subscription required Subscription required Jun 5, 2022
....................... Subscription required ....................... Subscription required Subscription required Jun 5, 2022
....................... Subscription required ....................... Subscription required Subscription required Jun 5, 2022
Subscription required - Subscription is required.

Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required 2022
Subscription required 2021
Subscription required Subscription required Subscription required 2020

Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2023
Corporate Presentation 2022
Form 10-K 2022
Other 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Corporate Presentation 2018
Financial Review 2018
Management Discussion & Analysis 2018
Annual Information Form 2017
Corporate Presentation 2017
Financial Review 2017
Management Discussion & Analysis 2017
Technical Report 2017
Annual Information Form 2016
Financial Review 2016
Other 2016
Year-end Mineral Reserves 2016
Annual Information Form 2015
Financial Review 2015
Technical Report 2014
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