# Relationship history for MSHA mine 1517569

Current hierarchy: **Bennett  Quillen → Beaver Creek Mining Inc → No 2**

- 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

- **controller_controls_mine:** Bennett  Quillen → No 2; 1991-07-20 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Wind River Energy Corp → No 2; 1994-07-01 to 1994-09-14; source msha-controller-operator-history
- **controller_controls_mine:** Davidson Michael W → No 2; 1994-07-01 to 1994-09-14; source msha-controller-operator-history
- **controller_controls_operator:** Davidson Michael W → Wind River Energy Corp; 1994-07-01 to 1994-09-14; source msha-controller-operator-history
- **operator_operates_mine:** R & L Coal Company Inc → No 2; 1994-09-15 to 1995-06-06; source msha-controller-operator-history
- **controller_controls_mine:** Roger N  Bentley → No 2; 1994-09-15 to 1995-06-06; source msha-controller-operator-history
- **controller_controls_operator:** Roger N  Bentley → R & L Coal Company Inc; 1994-09-15 to 1995-06-06; source msha-controller-operator-history
- **operator_operates_mine:** Beaver Creek Mining Inc → No 2; 1995-06-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bennett  Quillen → Beaver Creek Mining Inc; 1995-06-07 to current/open; source msha-controller-operator-history