# Relationship history for MSHA mine 4607814

Current hierarchy: **El Paso Energy Corp → Coastal Coal-West Virginia Llc → South Fork No 1 Deep (1)**

- 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:** Mc Court Loye → South Fork No 1 Deep (1); 1976-06-25 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** El Paso Energy Corp → South Fork No 1 Deep (1); 1979-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Short Denver Jr → South Fork No 1 Deep (1); 1985-02-22 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** K & C Coal Company Inc → South Fork No 1 Deep (1); 1989-11-01 to 1990-09-14; source msha-controller-operator-history
- **controller_controls_operator:** Mc Court Loye → K & C Coal Company Inc; 1989-11-01 to 1990-09-14; source msha-controller-operator-history
- **operator_operates_mine:** D Short Coal Company Inc → South Fork No 1 Deep (1); 1990-09-15 to 1993-08-05; source msha-controller-operator-history
- **controller_controls_operator:** Short Denver Jr → D Short Coal Company Inc; 1990-09-15 to 1993-08-05; source msha-controller-operator-history
- **controller_controls_mine:** James B  Simpkins → South Fork No 1 Deep (1); 1991-03-26 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** El Paso Energy Corp → South Fork No 1 Deep (1); 1993-05-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** N C T Coal Company Inc → South Fork No 1 Deep (1); 1993-08-06 to 1994-10-04; source msha-controller-operator-history
- **controller_controls_mine:** Jones Paul D Jr → South Fork No 1 Deep (1); 1993-08-06 to 1994-10-04; source msha-controller-operator-history
- **controller_controls_operator:** Jones Paul D Jr → N C T Coal Company Inc; 1993-08-06 to 1994-10-04; source msha-controller-operator-history
- **operator_operates_mine:** South Fork Energy Corp → South Fork No 1 Deep (1); 1994-10-05 to 1996-02-01; source msha-controller-operator-history
- **controller_controls_mine:** R Bruce  Ferguson et al → South Fork No 1 Deep (1); 1994-10-05 to 1997-10-19; source msha-controller-operator-history
- **controller_controls_operator:** R Bruce  Ferguson et al → South Fork Energy Corp; 1994-10-05 to 1996-02-01; source msha-controller-operator-history
- **operator_operates_mine:** Greenbrier Coal Company → South Fork No 1 Deep (1); 1996-02-02 to 1996-03-11; source msha-controller-operator-history
- **controller_controls_operator:** El Paso Energy Corp → Greenbrier Coal Company; 1996-02-02 to 1996-03-11; source msha-controller-operator-history
- **operator_operates_mine:** Cow Creek Coal Company Inc → South Fork No 1 Deep (1); 1996-03-12 to 1997-06-22; source msha-controller-operator-history
- **controller_controls_operator:** James B  Simpkins → Cow Creek Coal Company Inc; 1996-03-12 to 1997-06-22; source msha-controller-operator-history
- **operator_operates_mine:** Coastal Coal-West Virginia Llc → South Fork No 1 Deep (1); 1997-06-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** El Paso Energy Corp → Coastal Coal-West Virginia Llc; 1997-06-23 to current/open; source msha-controller-operator-history