# Relationship history for MSHA mine 1201715

Current hierarchy: **Quinley Roy J → Quinly Wilson Mining Corp → Q & W 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Quinly Wilson Mining Corp → Q & W Mine; 1979-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Quinley Roy J Et Al → Q & W Mine; 1979-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Quinley Roy J Et Al → Quinly Wilson Mining Corp; 1979-07-01 to current/open; source msha-controller-operator-history