# Relationship history for MSHA mine 1518153

Current hierarchy: **Darrell  Davis → D & H Coal Company of Laurel County Inc → D & H Coal Company of Laurel County Inc**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **controller_controls_mine:** Darrell  Davis → D & H Coal Company of Laurel County Inc; 1990-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Charles E  Mc Cullah → D & H Coal Company of Laurel County Inc; 1996-08-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Buried Sunshine Transport Inc → D & H Coal Company of Laurel County Inc; 1999-03-01 to 2007-12-09; source msha-controller-operator-history
- **controller_controls_operator:** Charles E  Mc Cullah → Buried Sunshine Transport Inc; 1999-03-01 to 2007-12-09; source msha-controller-operator-history
- **operator_operates_mine:** D & H Coal Company of Laurel County Inc → D & H Coal Company of Laurel County Inc; 2007-12-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Darrell  Davis → D & H Coal Company of Laurel County Inc; 2007-12-10 to current/open; source msha-controller-operator-history