# Relationship history for MSHA mine 2302311

Current hierarchy: **Edward  Potter → White Rock Quarry LLC → White Rock 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** White Rock Quarries of Lincoln County LLC → White Rock 1; 2005-05-03 to 2010-09-19; source msha-controller-operator-history
- **controller_controls_mine:** Gary Michael  Hartley → White Rock 1; 2005-05-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gary Michael  Hartley → White Rock Quarries of Lincoln County LLC; 2005-05-03 to 2010-09-19; source msha-controller-operator-history
- **operator_operates_mine:** White Rock Quarry LLC → White Rock 1; 2010-09-20 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Edward  Potter → White Rock 1; 2010-09-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Edward  Potter → White Rock Quarry LLC; 2010-09-20 to current/open; source msha-controller-operator-history