# Relationship history for MSHA mine 0405303

Current hierarchy: **Reed Family Companies → 7/11 Materials Inc → Pine Creek Rock**

- 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:** Reed Family Companies → Pine Creek Rock; 1995-04-12 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Pine Creek Rock → Pine Creek Rock; 1997-02-01 to 2003-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Ben  Sale → Pine Creek Rock; 1997-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ben  Sale → Pine Creek Rock; 1997-02-01 to 2003-06-30; source msha-controller-operator-history
- **operator_operates_mine:** 7/11 Materials Inc → Pine Creek Rock; 2003-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Reed Family Companies → 7/11 Materials Inc; 2003-07-01 to current/open; source msha-controller-operator-history