# Relationship history for MSHA mine 1514005

Current hierarchy: **Brock Larry W → Still House Branch Coal Company Inc → 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:** Bob'S Creek Coal Company Inc → No 1; 1983-04-01 to 1984-11-06; source msha-controller-operator-history
- **controller_controls_mine:** King Henry C & Curtis W Et Al → No 1; 1983-04-01 to 1984-11-06; source msha-controller-operator-history
- **controller_controls_operator:** King Henry C & Curtis W Et Al → Bob'S Creek Coal Company Inc; 1983-04-01 to 1984-11-06; source msha-controller-operator-history
- **operator_operates_mine:** Still House Branch Coal Company Inc → No 1; 1984-11-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Brock Larry W → No 1; 1984-11-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brock Larry W → Still House Branch Coal Company Inc; 1984-11-07 to current/open; source msha-controller-operator-history