# Relationship history for MSHA mine 1517578

Current hierarchy: **James River Coal Company → McCoy Elkhorn Coal Corporation → Mine #24**

- 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:** James River Coal Company → Mine #24; 1988-09-28 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Victory Coal Co., Inc → Mine #24; 1994-08-01 to 2003-01-19; source msha-controller-operator-history
- **controller_controls_mine:** Wesley  Childers → Mine #24; 1994-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wesley  Childers → Victory Coal Co., Inc; 1994-08-01 to 2003-01-19; source msha-controller-operator-history
- **operator_operates_mine:** McCoy Elkhorn Coal Corporation → Mine #24; 2003-01-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James River Coal Company → McCoy Elkhorn Coal Corporation; 2003-01-20 to current/open; source msha-controller-operator-history