# Relationship history for MSHA mine 1512455

Current hierarchy: **Howes David & Gary → Mason Creek Coal Company → 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:** E & P Mining Company Inc → No 1; 1980-08-01 to 1980-11-02; source msha-controller-operator-history
- **controller_controls_mine:** Childers Edgar & Paul Et Al → No 1; 1980-08-01 to 1980-11-02; source msha-controller-operator-history
- **controller_controls_operator:** Childers Edgar & Paul Et Al → E & P Mining Company Inc; 1980-08-01 to 1980-11-02; source msha-controller-operator-history
- **operator_operates_mine:** Van Hal Mining Company → No 1; 1980-11-03 to 1981-01-19; source msha-controller-operator-history
- **controller_controls_mine:** Van Hoose Jack → No 1; 1980-11-03 to 1981-01-19; source msha-controller-operator-history
- **controller_controls_operator:** Van Hoose Jack → Van Hal Mining Company; 1980-11-03 to 1981-01-19; source msha-controller-operator-history
- **operator_operates_mine:** Virginia City Coal Company Inc → No 1; 1981-01-20 to 1984-09-11; source msha-controller-operator-history
- **controller_controls_mine:** Danny D Mead → No 1; 1981-01-20 to 1984-09-11; source msha-controller-operator-history
- **controller_controls_operator:** Danny D Mead → Virginia City Coal Company Inc; 1981-01-20 to 1984-09-11; source msha-controller-operator-history
- **operator_operates_mine:** Miners Inc → No 1; 1984-09-12 to 1984-12-17; source msha-controller-operator-history
- **controller_controls_mine:** Robert B  Hughes → No 1; 1984-09-12 to 1984-12-17; source msha-controller-operator-history
- **controller_controls_operator:** Robert B  Hughes → Miners Inc; 1984-09-12 to 1984-12-17; source msha-controller-operator-history
- **operator_operates_mine:** Mason Creek Coal Company → No 1; 1984-12-18 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Howes David & Gary Et Al → No 1; 1984-12-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Howes David & Gary Et Al → Mason Creek Coal Company; 1984-12-18 to current/open; source msha-controller-operator-history