# Relationship history for MSHA mine 4607969

Current hierarchy: **Bevilock John → Mystic Mining Company Inc → Mine #1**

- 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:** Melody Mining Inc → Mine #1; 1990-08-01 to 1992-12-15; source msha-controller-operator-history
- **controller_controls_mine:** Marra Louis E → Mine #1; 1990-08-01 to 1992-12-15; source msha-controller-operator-history
- **controller_controls_operator:** Marra Louis E → Melody Mining Inc; 1990-08-01 to 1992-12-15; source msha-controller-operator-history
- **operator_operates_mine:** Mdm Mining Company Inc → Mine #1; 1992-12-16 to 1994-05-08; source msha-controller-operator-history
- **controller_controls_mine:** Mc Kenny Paul → Mine #1; 1992-12-16 to 1994-05-08; source msha-controller-operator-history
- **controller_controls_operator:** Mc Kenny Paul → Mdm Mining Company Inc; 1992-12-16 to 1994-05-08; source msha-controller-operator-history
- **operator_operates_mine:** Mystic Mining Company Inc → Mine #1; 1994-05-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bevilock John → Mine #1; 1994-05-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bevilock John → Mystic Mining Company Inc; 1994-05-09 to current/open; source msha-controller-operator-history