# Relationship history for MSHA mine 4606441

Current hierarchy: **Michael C  Faykus → Prosperity Energy Inc → Prosperity #2 Surface**

- 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

- **operator_operates_mine:** G & M Coals Inc → Prosperity #2 Surface; 1981-08-01 to 1987-03-11; source msha-controller-operator-history
- **controller_controls_mine:** Fitzpatrick Marvin → Prosperity #2 Surface; 1981-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Fitzpatrick Marvin → G & M Coals Inc; 1981-08-01 to 1987-03-11; source msha-controller-operator-history
- **controller_controls_mine:** Michael C  Faykus → Prosperity #2 Surface; 1986-02-24 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Prosperity Energy Inc → Prosperity #2 Surface; 1987-03-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael C  Faykus → Prosperity Energy Inc; 1987-03-12 to current/open; source msha-controller-operator-history