# Relationship history for MSHA mine 3607810

Current hierarchy: **Barry E  Young → Red Oak Mining Company → South 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:** St Lawrence Coal Company → South Mine; 1986-06-01 to 1992-04-30; source msha-controller-operator-history
- **controller_controls_mine:** Canterra Coal Inc → South Mine; 1986-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Canterra Coal Inc → St Lawrence Coal Company; 1986-06-01 to 1992-04-30; source msha-controller-operator-history
- **operator_operates_mine:** Red Oak Mining Company → South Mine; 1992-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Barry E  Young → South Mine; 1992-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Barry E  Young → Red Oak Mining Company; 1992-05-01 to current/open; source msha-controller-operator-history