# Relationship history for MSHA mine 0102839

Current hierarchy: **Hobson Jimmy → J & S Corp → West Blocton Pit**

- 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:** Mining Lands Inc → West Blocton Pit; 1989-11-01 to 1990-10-09; source msha-controller-operator-history
- **controller_controls_mine:** Kerlin Paul E Sr → West Blocton Pit; 1989-11-01 to 1990-10-09; source msha-controller-operator-history
- **controller_controls_operator:** Kerlin Paul E Sr → Mining Lands Inc; 1989-11-01 to 1990-10-09; source msha-controller-operator-history
- **operator_operates_mine:** J & S Corp → West Blocton Pit; 1990-10-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Hobson Jimmy → West Blocton Pit; 1990-10-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hobson Jimmy → J & S Corp; 1990-10-10 to current/open; source msha-controller-operator-history