# Relationship history for MSHA mine 4202282

Current hierarchy: **CRH PLC → Staker & Parson Companies → Nebo 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Meadow Valley Corp → Nebo Pit; 1996-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Meadow Valley Contractors, Inc. → Nebo Pit; 2000-03-01 to 2009-01-21; source msha-controller-operator-history
- **controller_controls_operator:** Meadow Valley Corp → Meadow Valley Contractors, Inc.; 2000-03-01 to 2009-01-21; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → Nebo Pit; 2002-05-30 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Staker & Parson Companies → Nebo Pit; 2009-01-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Staker & Parson Companies; 2009-01-22 to current/open; source msha-controller-operator-history