# Relationship history for MSHA mine 1514058

Current hierarchy: **Coleman James A → Best Elkhorn Mining Company Inc → No 1 Strip & Auger**

- 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:** Block Coal Inc → No 1 Strip & Auger; 1983-05-01 to 1983-08-10; source msha-controller-operator-history
- **controller_controls_mine:** Pelphrey Paul A-Pres → No 1 Strip & Auger; 1983-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pelphrey Paul A-Pres → Block Coal Inc; 1983-05-01 to 1983-08-10; source msha-controller-operator-history
- **operator_operates_mine:** Best Elkhorn Mining Company Inc → No 1 Strip & Auger; 1983-08-11 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Coleman James A → No 1 Strip & Auger; 1983-08-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Coleman James A → Best Elkhorn Mining Company Inc; 1983-08-11 to current/open; source msha-controller-operator-history