# Relationship history for MSHA mine 1508412

Current hierarchy: **Collins Goebel → Collins Coal Company → No 131 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

- **controller_controls_mine:** Owens Victor → No 131 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Double O Coal Company → No 131 Mine; 1975-06-06 to 1979-09-30; source msha-controller-operator-history
- **controller_controls_operator:** Owens Victor → Double O Coal Company; 1975-06-06 to 1979-09-30; source msha-controller-operator-history
- **operator_operates_mine:** T & M Coal Company → No 131 Mine; 1979-10-01 to 1980-04-13; source msha-controller-operator-history
- **controller_controls_mine:** Taylor Mack & Terry Moore → No 131 Mine; 1979-10-01 to 1980-04-13; source msha-controller-operator-history
- **controller_controls_operator:** Taylor Mack & Terry Moore → T & M Coal Company; 1979-10-01 to 1980-04-13; source msha-controller-operator-history
- **controller_controls_mine:** Collins Goebel → No 131 Mine; 1980-03-18 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** M A R C Fuels Inc → No 131 Mine; 1980-04-14 to 1980-10-20; source msha-controller-operator-history
- **controller_controls_mine:** Potter Barry D → No 131 Mine; 1980-04-14 to 1980-10-20; source msha-controller-operator-history
- **controller_controls_operator:** Potter Barry D → M A R C Fuels Inc; 1980-04-14 to 1980-10-20; source msha-controller-operator-history
- **operator_operates_mine:** Flat Fork Coal Company Inc → No 131 Mine; 1980-10-21 to 1981-08-23; source msha-controller-operator-history
- **controller_controls_mine:** Slone Roger & Robert → No 131 Mine; 1980-10-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Slone Roger & Robert → Flat Fork Coal Company Inc; 1980-10-21 to 1981-08-23; source msha-controller-operator-history
- **operator_operates_mine:** Collins Coal Company → No 131 Mine; 1981-08-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Collins Goebel → Collins Coal Company; 1981-08-24 to current/open; source msha-controller-operator-history