# Relationship history for MSHA mine 0101868

Current hierarchy: **Linley Bob → G & M Mining Company Inc → Bostic Creek Pit 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** G & M Mining Company Inc → Bostic Creek Pit No 1; 1978-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Linley Bob → Bostic Creek Pit No 1; 1978-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Linley Bob → G & M Mining Company Inc; 1978-04-01 to current/open; source msha-controller-operator-history