# Relationship history for MSHA mine 1504442

Current hierarchy: **Essar Minerals Canada Limited → Frasure Creek Mining, LLC. → Bulan Load Out**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Sigmon Enterprises → Bulan Load Out; 1950-01-01 to 1979-09-30; source msha-controller-operator-history
- **controller_controls_mine:** James A  Sigmon → Bulan Load Out; 1950-01-01 to 1979-10-22; source msha-controller-operator-history
- **controller_controls_operator:** James A  Sigmon → Sigmon Enterprises; 1950-01-01 to 1979-09-30; source msha-controller-operator-history
- **operator_operates_mine:** Lost Mountain Mining Inc → Bulan Load Out; 1979-10-01 to 1981-09-14; source msha-controller-operator-history
- **controller_controls_mine:** Mountain Coals Inc → Bulan Load Out; 1979-10-01 to 1981-09-14; source msha-controller-operator-history
- **controller_controls_operator:** Mountain Coals Inc → Lost Mountain Mining Inc; 1979-10-01 to 1981-09-14; source msha-controller-operator-history
- **operator_operates_mine:** Buckhorn Processing → Bulan Load Out; 1981-09-15 to 1998-06-29; source msha-controller-operator-history
- **controller_controls_mine:** Cyprus Amax Minerals Company → Bulan Load Out; 1981-09-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cyprus Amax Minerals Company → Buckhorn Processing; 1981-09-15 to 1998-06-29; source msha-controller-operator-history
- **operator_operates_mine:** Buckhorn Processing → Bulan Load Out; 1998-06-30 to 2005-08-30; source msha-controller-operator-history
- **controller_controls_mine:** Horizon Natural Resources Incorporated → Bulan Load Out; 1998-06-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Horizon Natural Resources Incorporated → Buckhorn Processing; 1998-06-30 to 2005-08-30; source msha-controller-operator-history
- **controller_controls_mine:** Jeffery A  Hoops → Bulan Load Out; 2001-03-01 to 2008-10-31; source msha-controller-operator-history
- **controller_controls_mine:** Jeffery A  Hoops → Bulan Load Out; 2005-04-04 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** BIG ELK MINING CO. , LLC → Bulan Load Out; 2005-08-31 to 2007-04-12; source msha-controller-operator-history
- **controller_controls_operator:** Jeffery A  Hoops → BIG ELK MINING CO. , LLC; 2005-08-31 to 2007-04-12; source msha-controller-operator-history
- **operator_operates_mine:** Frasure Creek Mining, LLC. → Bulan Load Out; 2007-04-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeffery A  Hoops → Frasure Creek Mining, LLC.; 2007-04-13 to 2008-10-31; source msha-controller-operator-history
- **controller_controls_mine:** Kenneth W  Woodring → Bulan Load Out; 2008-11-01 to 2010-04-06; source msha-controller-operator-history
- **controller_controls_operator:** Kenneth W  Woodring → Frasure Creek Mining, LLC.; 2008-11-01 to 2010-04-06; source msha-controller-operator-history
- **controller_controls_mine:** Essar Minerals Canada Limited → Bulan Load Out; 2010-04-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Essar Minerals Canada Limited → Frasure Creek Mining, LLC.; 2010-04-07 to current/open; source msha-controller-operator-history