Scope 1 Emissions

Track and calculate direct greenhouse gas emissions from mining operations and owned sources

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Emission Categories

  • Stationary Combustion 4.2M tCO₂e
  • Mobile Equipment 3.1M tCO₂e
  • Process Emissions 1.1M tCO₂e
  • Fugitive Emissions 0.8M tCO₂e
  • Other Direct Emissions 0.2M tCO₂e

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Total Scope 1

8.4M
tCO₂e
7.2% vs last year

Stationary Combustion

Emissions from fixed combustion sources including power generation, heating, and processing

4.2M tCO₂e Total
52% of Scope 1
15 Facilities

Power Generation

Total annual diesel consumption for power generation
Combined capacity of all diesel generators
Annual natural gas consumption for power generation
Average efficiency of natural gas turbines

Heating and Processing

Annual fuel consumption for process heating
Diesel consumption for mineral drying operations
Thermal efficiency of drying systems

Facility Heating

Natural gas for administrative and workshop heating
Diesel for hot water systems in facilities
Annual heating degree days for climate adjustment

Mobile Equipment

Emissions from mining vehicles, haul trucks, and mobile combustion sources

3.1M tCO₂e Total
37% of Scope 1
285 Vehicles

Haulage Operations

Annual diesel consumption for haul trucks
Active haul trucks in operation
One-way haul distance from pit to dump
Total material hauled annually

Loading and Support Equipment

Diesel consumption for loading equipment
Diesel for dozing and grading operations
Diesel consumption for drilling operations
Light vehicles, water trucks, service vehicles

Equipment Specifications

EPA emission standard compliance level
Average equipment operating hours vs available
Average fuel consumption rate across fleet

Process Emissions

Emissions from chemical and industrial processes in mining operations

1.1M tCO₂e Total
13% of Scope 1
8 Process Lines

Mineral Processing

Annual carbonate minerals processed (limestone, dolomite)
Efficiency of carbonate decomposition process
Sulfide ore processed through roasting
Sulfur content in processed sulfide ores

Metallurgical Processes

Annual metal production through smelting
Coke, coal, or other reducing agents used
Limestone, dolomite used as flux materials
Annual refined metal production

Chemical Reactions

Sulfuric acid or other acids used in processing
Flotation reagents, cyanide, other chemicals
Typical operating temperature for key processes

Fugitive Emissions

Intentional and unintentional releases from mining operations and equipment

0.8M tCO₂e Total
10% of Scope 1
24 Mining Sites

Coal Mining Fugitives

Annual coal production from all operations
Average gas content of coal seams
Percentage of methane captured and utilized

Venting and Flaring

Methane intentionally released to atmosphere
Methane combusted in flare systems
Efficiency of methane destruction in flares
Methane in underground mine ventilation air

Equipment Leaks

Annual LDAR surveys conducted
Percentage of detected leaks repaired
Valves, flanges, connectors in fugitive program

Other Direct Emissions

Additional direct emission sources specific to mining operations

0.2M tCO₂e Total
2% of Scope 1
12 Sources

Blasting Operations

Annual consumption of explosives
Number of blasting events annually
Typical diameter of blast holes

Emergency Generators

Diesel consumption for emergency generators
Annual hours of emergency generator operation
Annual hours for generator testing

Other Sources

Refrigerant losses from HVAC and cooling systems
Fuel used in emergency response training
Fuel for laboratory equipment and testing
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