# Relationship history for MSHA mine 4405736

Current hierarchy: **Rasnake Billy H → R A O 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:** Jackson Fork Coal Company Inc → No 1; 1981-09-01 to 1984-01-10; source msha-controller-operator-history
- **controller_controls_mine:** Cline Gordon & Gordie → No 1; 1981-09-01 to 1984-01-10; source msha-controller-operator-history
- **controller_controls_operator:** Cline Gordon & Gordie → Jackson Fork Coal Company Inc; 1981-09-01 to 1984-01-10; source msha-controller-operator-history
- **operator_operates_mine:** Stone Cove Coal Company → No 1; 1984-01-11 to 1985-01-15; source msha-controller-operator-history
- **controller_controls_mine:** Apcoal Development Company → No 1; 1984-01-11 to 1985-01-15; source msha-controller-operator-history
- **controller_controls_operator:** Apcoal Development Company → Stone Cove Coal Company; 1984-01-11 to 1985-01-15; source msha-controller-operator-history
- **operator_operates_mine:** R A O Coal Company Inc → No 1; 1985-01-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Rasnake Billy H → No 1; 1985-01-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rasnake Billy H → R A O Coal Company Inc; 1985-01-16 to current/open; source msha-controller-operator-history