# Relationship history for MSHA mine 3607796

Current hierarchy: **Stufft James W → Laura D Coal Inc → Lepley Mine Job #6**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Fetterolf Donald L → Lepley Mine Job #6; 1979-05-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Stufft James W → Lepley Mine Job #6; 1985-02-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Commonwealth Coals Inc → Lepley Mine Job #6; 1986-04-01 to 1989-09-10; source msha-controller-operator-history
- **controller_controls_operator:** Fetterolf Donald L → Commonwealth Coals Inc; 1986-04-01 to 1989-09-10; source msha-controller-operator-history
- **operator_operates_mine:** Laura D Coal Inc → Lepley Mine Job #6; 1989-09-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stufft James W → Laura D Coal Inc; 1989-09-11 to current/open; source msha-controller-operator-history