Overview
| Stage | Production |
| Mine Type | Underground |
| Commodities |
|
| Mining Method |
|
| Processing |
|
| Mine Life | 79 years (as of Jan 1, 2009) |
Summary:
Colonsay utilizes shaft mining. Traditional potash shaft mining takes place underground at depths of over 1,000 meters where continuous mining machines cut out the ore face and load it onto conveyor belts. The ore is then crushed, moved to storage bins and hoisted to refineries above ground.
Colonsay is operated as a conventional underground mine that uses mining machines and room and pillar techniques to bring solid ore to the surface.
Recoveries & Grades:
| Commodity | Parameter | 2017 | 2016 | 2015 | 2014 | 2013 |
|
Potash
|
Head Grade, %
| 24.4 | 25.7 | 26.8 | 26.9 | 26.1 |
Production:
| Commodity | Units | 2017 | 2016 | 2015 | 2014 | 2013 |
|
Potash
|
Mt
| ......  | ...... | 1.4 | 1.4 | 0.8 |
All production numbers are expressed as salt.
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Operational Metrics:
| Metrics | 2017 | 2016 | 2015 | 2014 | 2013 |
|
Ore tonnes mined
| ...... | 1.6 Mt | 3.9 Mt | 3.8 Mt | 2.4 Mt |
|
Annual production capacity
| ...... | 1.5 Mt of potash salt | | | |
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Reserves at December 31, 2017:
| Category | Tonnage | Commodity | Grade |
|
Proven & Probable
|
235 Mt
|
K2O
|
26.3 %
|
Corporate Filings & Presentations:
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Aerial view:
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