# Relationship history for MSHA mine 4604818

Current hierarchy: **Scott Larry → B & S Coal Company → No 5 Mine**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** Ace Mining Company → No 5 Mine; 1975-09-04 to 1976-09-08; source msha-controller-operator-history
- **controller_controls_mine:** Bishop Raymond--Arnold Elkins & Dall Cline → No 5 Mine; 1975-09-04 to 1976-09-08; source msha-controller-operator-history
- **controller_controls_operator:** Bishop Raymond--Arnold Elkins & Dall Cline → Ace Mining Company; 1975-09-04 to 1976-09-08; source msha-controller-operator-history
- **operator_operates_mine:** Burke Mountain Coal Company Inc → No 5 Mine; 1976-09-09 to 1977-05-19; source msha-controller-operator-history
- **controller_controls_mine:** Bailey Michael → No 5 Mine; 1976-09-09 to 1977-05-19; source msha-controller-operator-history
- **controller_controls_operator:** Bailey Michael → Burke Mountain Coal Company Inc; 1976-09-09 to 1977-05-19; source msha-controller-operator-history
- **operator_operates_mine:** B & S Coal Company → No 5 Mine; 1977-05-20 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Scott Larry → No 5 Mine; 1977-05-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Scott Larry → B & S Coal Company; 1977-05-20 to current/open; source msha-controller-operator-history