# Relationship history for MSHA mine 3605928

Current hierarchy: **Coleman Ronald → Firestone Coal Inc → Scott Strip**

- 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:** J E S Trucking Inc → Scott Strip; 1975-12-01 to 1976-08-03; source msha-controller-operator-history
- **controller_controls_mine:** Saul John E → Scott Strip; 1975-12-01 to 1976-08-03; source msha-controller-operator-history
- **controller_controls_operator:** Saul John E → J E S Trucking Inc; 1975-12-01 to 1976-08-03; source msha-controller-operator-history
- **operator_operates_mine:** Firestone Coal Inc → Scott Strip; 1976-08-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Coleman Ronald → Scott Strip; 1976-08-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Coleman Ronald → Firestone Coal Inc; 1976-08-04 to current/open; source msha-controller-operator-history