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United States
Bull Mountains Mine

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 Location:
21 km S from Roundup, Montana, United States

  Address:
100 Portal Drive
Roundup
Montana, United States
59072
Phone  ...  Subscription required
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Personnel
  • Filings & News

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Overview

StatusTemporary Suspension
Mine TypeUnderground
Commodities
  • Coal (thermal)
Mining Method
  • Longwall
  • Continuous
  • Room-and-pillar
Production Start...
In February 2023, a Montana federal district court judge halted the mining of federal coal at the Bull Mountains Mine No.1. This halt is pending a thorough analysis of the mine’s impacts on ranchers, vital water sources, and the surrounding environment. The decision will require the Office of Surface Mining (OSM) to prepare an Environmental Impact Statement (EIS) to determine whether the expansion meets legal requirements to proceed.


Owners

Source: p. 27
CompanyInterestOwnership
Signal Peak Energy LLC (operator) 100 % Direct
Signal Peak Energy, LLC owns and operates the Bull Mountains Mine No.1 underground coal mine.

Contractors

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Deposit Type

  • Sedimentary


Summary:

The overburden and the underburden of the Bull Mountains Mine consist of layers of rock including clinker, sandstone, silty sandstone, coal, siltstone, and claystone. Typically, these layers are thin and alternate between the various lithologies. The seam being mined is the Mammoth coal seam, and the coal is sub-bituminous.


Mining Methods

  • Longwall
  • Continuous
  • Room-and-pillar


Summary:

The vast majority of coal is mined using the longwall method; the remaining development coal is mined using the room-and-pillar method.

The mine operates a longwall and one continuous mining machine development section.


Crushing and Grinding


Processing

Source: Subscription required

Summary:

- subscription is required.


Production:

CommodityUnits202220212020201920182017
Coal (thermal) tons  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required7,566,4805,883,820
Subscription required - Subscription is required.

Operational Metrics:

Metrics2020
Raw coal annual capacity 10 M tons

Reserves at October 1, 2020:

CategoryTonnage Commodity
Proven & Probable 86.8 M tons Coal (thermal)


Pipelines
TypeMaterialDiameterLengthDescription


Heavy Mobile Equipment:

Mine Management:

Job TitleNameEmailProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jul 31, 2023
....................... Subscription required ....................... Subscription required ....................... Subscription required Subscription required Jul 31, 2023
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2022
Subscription required 2021
Subscription required 2020
Subscription required 2019
Subscription required 2018
Subscription required 2017

Corporate Filings & Presentations:

DocumentYear
Other 2023
Environmental Assessment 2022
Other 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
Other 2010
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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