# Relationship history for MSHA mine 1517833

Current hierarchy: **Gary  Adams → Apollo Coal Company → Mastiff Mine**

- 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

- **controller_controls_mine:** Gary  Adams  et al → Mastiff Mine; 1980-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** El Paso Energy Corp → Mastiff Mine; 1989-04-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Steve  Findley et al → Mastiff Mine; 1993-07-14 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Coastal Coal Company Llc → Mastiff Mine; 1996-08-01 to 2000-06-19; source msha-controller-operator-history
- **controller_controls_operator:** El Paso Energy Corp → Coastal Coal Company Llc; 1996-08-01 to 2000-06-19; source msha-controller-operator-history
- **operator_operates_mine:** Fleetwood Energy Inc → Mastiff Mine; 2000-06-20 to 2001-10-02; source msha-controller-operator-history
- **controller_controls_operator:** Steve  Findley et al → Fleetwood Energy Inc; 2000-06-20 to 2001-10-02; source msha-controller-operator-history
- **operator_operates_mine:** Coastal Coal Company, LLC → Mastiff Mine; 2001-10-03 to 2003-01-31; source msha-controller-operator-history
- **controller_controls_operator:** El Paso Energy Corp → Coastal Coal Company, LLC; 2001-10-03 to 2003-01-31; source msha-controller-operator-history
- **controller_controls_mine:** Amfire LLC → Mastiff Mine; 2003-01-31 to 2003-01-31; source msha-controller-operator-history
- **operator_operates_mine:** Enterprise Mining Company, L. L. C. → Mastiff Mine; 2003-02-01 to 2003-07-07; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources, Inc. → Mastiff Mine; 2003-02-01 to 2016-07-25; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources, Inc. → Enterprise Mining Company, L. L. C.; 2003-02-01 to 2003-07-07; source msha-controller-operator-history
- **controller_controls_operator:** Amfire LLC → Enterprise Mining Company, L. L. C.; 2003-02-01 to 2003-01-31; source msha-controller-operator-history
- **operator_operates_mine:** Apollo Coal Company → Mastiff Mine; 2003-07-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gary  Adams  et al → Apollo Coal Company; 2003-07-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources Holdings, Inc → Mastiff Mine; 2016-07-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources Holdings, Inc → Enterprise Mining Company, L. L. C.; 2016-07-26 to 2003-07-07; source msha-controller-operator-history