# Relationship history for MSHA mine 1515745

Current hierarchy: **Mc Coy John P → Prosperity Mining Inc → Miracle 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** William D  Donan → Miracle Mine; 1981-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Miracle Mining Company Inc → Miracle Mine; 1986-09-01 to 1987-03-16; source msha-controller-operator-history
- **controller_controls_operator:** William D  Donan → Miracle Mining Company Inc; 1986-09-01 to 1987-03-16; source msha-controller-operator-history
- **controller_controls_mine:** Paul E  Roberts et al → Miracle Mine; 1986-11-30 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Miracle Mining Company Inc → Miracle Mine; 1987-03-17 to 1988-02-14; source msha-controller-operator-history
- **controller_controls_operator:** Paul E  Roberts et al → Miracle Mining Company Inc; 1987-03-17 to 1988-02-14; source msha-controller-operator-history
- **operator_operates_mine:** Prosperity Mining Inc → Miracle Mine; 1988-02-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mc Coy John P → Miracle Mine; 1988-02-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mc Coy John P → Prosperity Mining Inc; 1988-02-15 to current/open; source msha-controller-operator-history