# Relationship history for MSHA mine 4405144

Current hierarchy: **Looney Jerry → Rock Branch Coal Corp → Rock Branch Coal Corp #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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Epling David → Rock Branch Coal Corp #1; 1978-03-01 to 1979-03-08; source msha-controller-operator-history
- **operator_operates_mine:** Divided Coal Corp → Rock Branch Coal Corp #1; 1978-11-01 to 1979-03-08; source msha-controller-operator-history
- **controller_controls_operator:** Epling David → Divided Coal Corp; 1978-11-01 to 1979-03-08; source msha-controller-operator-history
- **operator_operates_mine:** Red Ash Smokeless Coal Corp → Rock Branch Coal Corp #1; 1979-03-09 to 1986-03-19; source msha-controller-operator-history
- **controller_controls_mine:** Jordan Dave → Rock Branch Coal Corp #1; 1979-03-09 to 1986-03-19; source msha-controller-operator-history
- **controller_controls_operator:** Jordan Dave → Red Ash Smokeless Coal Corp; 1979-03-09 to 1986-03-19; source msha-controller-operator-history
- **operator_operates_mine:** Northern Coal Company → Rock Branch Coal Corp #1; 1986-03-20 to 1988-04-13; source msha-controller-operator-history
- **controller_controls_mine:** Johnson Patrick R Et Al → Rock Branch Coal Corp #1; 1986-03-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Johnson Patrick R Et Al → Northern Coal Company; 1986-03-20 to 1988-04-13; source msha-controller-operator-history
- **operator_operates_mine:** Rock Branch Coal Corp → Rock Branch Coal Corp #1; 1988-04-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Looney Jerry → Rock Branch Coal Corp #1; 1988-04-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Looney Jerry → Rock Branch Coal Corp; 1988-04-14 to current/open; source msha-controller-operator-history