Parent company or controller Kiewit

Rank in Greenhouse 100 Coal Index: 10
CO2 emissions from combustion of all coal supplied (metric tons) 2023: 21,170,673
CO2 emissions from combustion of all coal supplied (metric tons) 2024: 11,471,266
Percentage of national total 2023 coal supplier emissions: 1.9%
Percentage of national total 2024 coal supplier emissions: 1.2%

Advanced data displayed (display basic data instead)

(Click on column headers to re-sort table: current sort is by 2023 CO2 emissions (mt) descending.)

Links on mine names lead to detailed mine data displays.)

Mine Name	State	2023 CO2 emissions (mt)	2024 CO2 emissions (mt)	Split *	Coal production 2023 (short tons)	Coal production 2024 (short tons)	Coal type
Buckskin Mine	WY	21,170,673	11,471,266		12,462,134	6,752,570	subbituminous

For more information on the data, see the technical notes.
* Split: if 50% appears in this column, then the facility's emissions have been split among two 50/50% ownership parent companies.

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Greenhouse 100 Coal Index