# Relationship history for MSHA mine 4001105

Current hierarchy: **Cofer William D → Coach Coal Inc → Tipple No 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

- **operator_operates_mine:** Shemco Inc → Tipple No 1; 1950-01-01 to 1977-11-07; source msha-controller-operator-history
- **controller_controls_mine:** Marcom James B → Tipple No 1; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Marcom James B → Shemco Inc; 1950-01-01 to 1977-11-07; source msha-controller-operator-history
- **controller_controls_mine:** Bunch Jo Anne → Tipple No 1; 1974-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Cofer William D → Tipple No 1; 1977-04-27 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Laurel Fork Mining Company Inc → Tipple No 1; 1977-11-08 to 1985-06-06; source msha-controller-operator-history
- **controller_controls_operator:** Bunch Jo Anne → Laurel Fork Mining Company Inc; 1977-11-08 to 1985-06-06; source msha-controller-operator-history
- **operator_operates_mine:** Coach Coal Inc → Tipple No 1; 1985-06-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cofer William D → Coach Coal Inc; 1985-06-07 to current/open; source msha-controller-operator-history