# Relationship history for MSHA mine 4601020

Current hierarchy: **Chris  Jennings → Mangus Coal Inc → Scotch Hill 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

- **operator_operates_mine:** Mangus Coal Inc → Scotch Hill Mine; 1950-01-01 to 2001-02-25; source msha-controller-operator-history
- **controller_controls_mine:** Maurice  Jennings → Scotch Hill Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Maurice  Jennings → Mangus Coal Inc; 1950-01-01 to 2001-02-25; source msha-controller-operator-history
- **operator_operates_mine:** Mangus Coal Inc → Scotch Hill Mine; 2001-02-26 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Chris  Jennings → Scotch Hill Mine; 2001-02-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Chris  Jennings → Mangus Coal Inc; 2001-02-26 to current/open; source msha-controller-operator-history