# Relationship history for MSHA mine 1516069

Current hierarchy: **Terry Charles  Marshall → Superior Mining & Mineral Inc → No 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

- **controller_controls_mine:** Stump Ervin & Charles Marshall → No 1; 1981-08-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Superior Mining & Mineral Inc → No 1; 1987-04-01 to 1989-03-06; source msha-controller-operator-history
- **controller_controls_operator:** Stump Ervin & Charles Marshall → Superior Mining & Mineral Inc; 1987-04-01 to 1989-03-06; source msha-controller-operator-history
- **operator_operates_mine:** Superior Mining & Mineral Inc → No 1; 1989-03-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Terry Charles  Marshall → No 1; 1989-03-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Terry Charles  Marshall → Superior Mining & Mineral Inc; 1989-03-07 to current/open; source msha-controller-operator-history