777-Mine

Hudbay was founded at the Flin Flon orebody in northern Manitoba over 90 years ago, and today the mineral rich area is still the location of our main operating platform. In the town of Flin Flon, we own the 777 mine as well as an ore concentrator and zinc production facilities. 

Key Facts

  • Location: Flin Flon
  • Ownership: 100%
  • Property: 4,400 hectares
  • Primary metals: zinc, copper
  • Secondary metals: gold, silver
  • Type of mining: underground

Last Twelve Months

Daily ore milled

4,400 tonnes per day

Cu production1

31,000 tonnes

Zn production1

59,000 tonnes

Au-Eq production1

68,000 ounces

Unit operating cost2

C$110/t

Current mine life

3 years


Note: Last Twelve Months as of March 31, 2018

1. Production is contained metal in concentrate; silver converted to gold at a rate of 70:1
2. Combined mine, mill and G&A unit operating costs per tonne of ore processed

 

 

Overview

Hudbay’s 100% owned 777 mine is an underground copper, zinc, gold and silver mine located within the Flin Flon Greenstone Belt, immediately adjacent to our principal concentrator and zinc pressure leach plant in Flin Flon, Manitoba. Development of the 777 mine commenced in 1999 and commercial production began in 2004. The anticipated mine life is expected to be until 2021.

Ore produced at the 777 mine is transported to Hudbay’s Flin Flon concentrator for processing into copper and zinc concentrates. Copper concentrate is sold to third party purchasers and zinc concentrate is sent to Hudbay’s Flin Flon zinc plant where it is further processed into special high grade zinc before being sold to third party purchasers.

Mineral Reserves and Resources

777 Mineral Reserves as at January 1, 20181,2

Category Tonnes Cu (%) Zn (%) Au (g/t) Ag (g/t)
777 Mine
  Proven 2,625,000 1.78 4.20 1.70 25.97
  Probable  1,251,000  1.11   4.33  1.82 25.41
Total Mineral Reserve
3,876,000
1.56
4.24
1.73
25.79
1 A zinc price of $1.24 per pound (includes premium), copper price of $2.67 per pound, a gold price of $1,300 per ounce and silver price of $18.00 per ounce using an exchange rate of 1.25 C$/US$ were used to estimate mineral reserves and mineral resources. 
2 For additional details relating to the estimates of mineral reserves and resources at the 777 mine, including data verification and quality assurance / quality control processes, refer to Schedule B in Hudbay's Annual Information Form for the year ended December 31, 2017 and the 777 Technical Report.

777 Mineral Resources as at January 1, 20181,2,3

Category Tonnes Cu (%) Zn (%) Au (g/t) Ag (g/t)
777 Mine
  Indicated 736,000 0.99 3.53 1.82 26.24
  Inferred 673,000 1.01 4.26 1.72 30.95
1 A zinc price of $1.24 per pound (includes premium), copper price of $2.67 per pound, a gold price of $1,300 per ounce and silver price of $18.00 per ounce using an exchange rate of 1.25 C$/US$ was used to estimate mineral reserves and resources. 
2 For additional details relating to the estimates of mineral reserves and resources at the 777 mine, including data verification and quality assurance / quality control processes, refer to Schedule B in Hudbay's Annual Information Form for the year ended December 31, 2017 and the 777 Technical Report. 
3 Mineral resources that are not mineral reserves do not have demonstrated economic viability. Please refer to Schedule A "Glossary of Mining Terms" in Hudbay's Annual Information Form for the year ended December 31, 2017. 

(For more detailed information about reserves and resources, please see Reserves and Resources.) 

History

1915 – Prospector Tom Creighton registers a claim on land near the 55th parallel in northern Manitoba. He calls his strike Flin Flon.

1928 – Construction begins at Flin Flon. At the same time, a railway is laid between The Pas and Flin Flon and a hydroelectric plant constructed at Island Falls. At the time of construction, Flin Flon was one of the largest industrial development projects in the Western Hemisphere. It has been said that it was second only to the Panama Canal in terms of scale at the time.

1930 – Production begins at Flin Flon.

1982 – Production begins at Trout Lake.

1992 – The Flin Flon mine closes.

1993 – 777 orebody is discovered by an underground exploration hole.

1999 – 777 mine development begins.

2004 – Completion of the flagship 777 mine in Flin Flon. Commercial production begins.

2010 – After 80 years of service, the copper smelter at Flin Flon closes.

2010 – 777 North expansion begins.

 

777 MINE TECHNICAL REPORT, NOVEMBER 6, 2012

Thumb Date Download
November 6, 2012 Technical Report 10.05 MB

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