# Relationship history for MSHA mine 1001742

Current hierarchy: **CRH PLC → Idaho Materials & Construction → Treasure Valley Portable #2**

- 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:** Larry  Johnson → Treasure Valley Portable #2; 1985-12-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Mountain Home Redi-Mix Inc → Treasure Valley Portable #2; 1986-05-01 to 2005-08-14; source msha-controller-operator-history
- **controller_controls_operator:** Larry  Johnson → Mountain Home Redi-Mix Inc; 1986-05-01 to 2005-08-14; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → Treasure Valley Portable #2; 2000-03-27 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Idaho Materials & Construction → Treasure Valley Portable #2; 2005-08-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Idaho Materials & Construction; 2005-08-15 to current/open; source msha-controller-operator-history