# Relationship history for MSHA mine 1513362

Current hierarchy: **Benjamin R.  Bennett → Rb Coal Company Inc → R B #3 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:** Benjamin R.  Bennett → R B #3 Mine; 1979-11-29 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jordan Ted → R B #3 Mine; 1981-11-17 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Big J Coal Company Inc → R B #3 Mine; 1982-02-01 to 1983-02-22; source msha-controller-operator-history
- **controller_controls_operator:** Jordan Ted → Big J Coal Company Inc; 1982-02-01 to 1983-02-22; source msha-controller-operator-history
- **operator_operates_mine:** Rb Coal Company Inc → R B #3 Mine; 1983-02-23 to 1983-07-13; source msha-controller-operator-history
- **controller_controls_operator:** Benjamin R.  Bennett → Rb Coal Company Inc; 1983-02-23 to 1983-07-13; source msha-controller-operator-history
- **operator_operates_mine:** Dmc Energy Inc → R B #3 Mine; 1983-07-14 to 1989-05-21; source msha-controller-operator-history
- **controller_controls_mine:** Bradley Equipment Company Inc → R B #3 Mine; 1983-07-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bradley Equipment Company Inc → Dmc Energy Inc; 1983-07-14 to 1989-05-21; source msha-controller-operator-history
- **operator_operates_mine:** Rb Coal Company Inc → R B #3 Mine; 1989-05-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Benjamin R.  Bennett → Rb Coal Company Inc; 1989-05-22 to current/open; source msha-controller-operator-history