# Relationship history for MSHA mine 0202336

Current hierarchy: **Becker W R Sr → Arizona Flux Mines Inc → Ash Peak 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:** Ash Peak Contracting → Ash Peak Mine; 1986-09-01 to 1987-04-30; source msha-controller-operator-history
- **controller_controls_mine:** Arizona Airport Development Inc → Ash Peak Mine; 1986-09-01 to 1987-04-30; source msha-controller-operator-history
- **controller_controls_operator:** Arizona Airport Development Inc → Ash Peak Contracting; 1986-09-01 to 1987-04-30; source msha-controller-operator-history
- **operator_operates_mine:** Arizona Flux Mines Inc → Ash Peak Mine; 1987-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Becker W R Sr → Ash Peak Mine; 1987-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Becker W R Sr → Arizona Flux Mines Inc; 1987-05-01 to current/open; source msha-controller-operator-history