# Relationship history for MSHA mine 1504371

Current hierarchy: **Clifford W  Sams → Gray Fork Enterprises Inc → Gray Fork**

- 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:** Lewis Coal Company Inc → Gray Fork; 1950-01-01 to 1994-10-19; source msha-controller-operator-history
- **controller_controls_mine:** James  Ward → Gray Fork; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James  Ward → Lewis Coal Company Inc; 1950-01-01 to 1994-10-19; source msha-controller-operator-history
- **operator_operates_mine:** Lewis Coal Sales → Gray Fork; 1994-10-20 to 1996-08-18; source msha-controller-operator-history
- **controller_controls_mine:** Bill S  Detherage et al → Gray Fork; 1994-10-20 to 1996-08-18; source msha-controller-operator-history
- **controller_controls_operator:** Bill S  Detherage et al → Lewis Coal Sales; 1994-10-20 to 1996-08-18; source msha-controller-operator-history
- **operator_operates_mine:** Smith Coal Processing → Gray Fork; 1996-08-19 to 2001-07-23; source msha-controller-operator-history
- **controller_controls_mine:** Darrell Steven  Smith → Gray Fork; 1996-08-19 to 2001-07-23; source msha-controller-operator-history
- **controller_controls_operator:** Darrell Steven  Smith → Smith Coal Processing; 1996-08-19 to 2001-07-23; source msha-controller-operator-history
- **operator_operates_mine:** Creekville Coal Processing LLC → Gray Fork; 2001-07-24 to 2004-01-26; source msha-controller-operator-history
- **controller_controls_mine:** Rodney  Wagers → Gray Fork; 2001-07-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rodney  Wagers → Creekville Coal Processing LLC; 2001-07-24 to 2004-01-26; source msha-controller-operator-history
- **operator_operates_mine:** Caribou Coal Processing LLC → Gray Fork; 2004-01-27 to 2007-06-05; source msha-controller-operator-history
- **controller_controls_mine:** Norado Financial LLC  et al → Gray Fork; 2004-01-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Norado Financial LLC  et al → Caribou Coal Processing LLC; 2004-01-27 to 2007-06-05; source msha-controller-operator-history
- **operator_operates_mine:** Gray Fork Enterprises Inc → Gray Fork; 2007-06-06 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Clifford W  Sams → Gray Fork; 2007-06-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Clifford W  Sams → Gray Fork Enterprises Inc; 2007-06-06 to current/open; source msha-controller-operator-history