# Relationship history for MSHA mine 1513056

Current hierarchy: **Benjamin R.  Bennett → Rb Coal Company Inc → J And M Coal Co Inc**

- 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

- **controller_controls_mine:** Benjamin R.  Bennett → J And M Coal Co Inc; 1979-11-29 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Rb Coal Company Inc → J And M Coal Co Inc; 1981-08-01 to 1982-05-16; source msha-controller-operator-history
- **controller_controls_operator:** Benjamin R.  Bennett → Rb Coal Company Inc; 1981-08-01 to 1982-05-16; source msha-controller-operator-history
- **operator_operates_mine:** D & D Coal Company Inc → J And M Coal Co Inc; 1982-05-17 to 1983-08-28; source msha-controller-operator-history
- **controller_controls_mine:** Bennett Carl → J And M Coal Co Inc; 1982-05-17 to 1983-08-28; source msha-controller-operator-history
- **controller_controls_operator:** Bennett Carl → D & D Coal Company Inc; 1982-05-17 to 1983-08-28; source msha-controller-operator-history
- **operator_operates_mine:** B F D Coal Company Inc → J And M Coal Co Inc; 1983-08-29 to 1983-10-03; source msha-controller-operator-history
- **controller_controls_mine:** Brewer Frank → J And M Coal Co Inc; 1983-08-29 to 1983-10-03; source msha-controller-operator-history
- **controller_controls_operator:** Brewer Frank → B F D Coal Company Inc; 1983-08-29 to 1983-10-03; source msha-controller-operator-history
- **operator_operates_mine:** Rb Coal Company Inc → J And M Coal Co Inc; 1983-10-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Benjamin R.  Bennett → Rb Coal Company Inc; 1983-10-04 to current/open; source msha-controller-operator-history