# Relationship history for MSHA mine 2902459

Current hierarchy: **Alan D Johnson → Rock Star Packing → Johnson Pit**

- 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

- **operator_operates_mine:** Rock Star Packing → Johnson Pit; 2016-10-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Alan D Johnson → Johnson Pit; 2016-10-04 to 2019-05-09; source msha-controller-operator-history
- **controller_controls_operator:** Alan D Johnson → Rock Star Packing; 2016-10-04 to 2019-05-09; source msha-controller-operator-history
- **controller_controls_mine:** Alan D Johnson et al → Johnson Pit; 2019-05-10 to 2020-07-09; source msha-controller-operator-history
- **controller_controls_operator:** Alan D Johnson et al → Rock Star Packing; 2019-05-10 to 2020-07-09; source msha-controller-operator-history
- **controller_controls_operator:** Jimmy W Carrell et al → Rock Star Packing; 2019-05-10 to 2020-07-09; source msha-controller-operator-history
- **controller_controls_mine:** Alan D Johnson → Johnson Pit; 2020-07-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alan D Johnson → Rock Star Packing; 2020-07-10 to current/open; source msha-controller-operator-history