# Relationship history for MSHA mine 0101700

Current hierarchy: **Riley James W → Real Coal Inc → Harris Pit(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:** Real Coal Inc → Harris Pit(Strip); 1977-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Riley James W → Harris Pit(Strip); 1977-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Riley James W → Real Coal Inc; 1977-04-01 to current/open; source msha-controller-operator-history