# Relationship history for MSHA mine 4202043

Current hierarchy: **CRH PLC → Staker & Parson Companies → Point West Lehi**

- 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:** Metro West Ready Mix Inc → Point West Lehi; 1989-01-01 to 1999-03-23; source msha-controller-operator-history
- **controller_controls_mine:** Paul B  Richards  et al → Point West Lehi; 1989-01-01 to 1999-03-23; source msha-controller-operator-history
- **controller_controls_operator:** Paul B  Richards  et al → Metro West Ready Mix Inc; 1989-01-01 to 1999-03-23; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → Point West Lehi; 1996-05-03 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Pioneer Concrete Of Utah Inc → Point West Lehi; 1999-03-24 to 2001-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Pioneer International Ltd → Point West Lehi; 1999-03-24 to 2001-05-31; source msha-controller-operator-history
- **controller_controls_operator:** Pioneer International Ltd → Pioneer Concrete Of Utah Inc; 1999-03-24 to 2001-05-31; source msha-controller-operator-history
- **operator_operates_mine:** Jack B Parson Companies → Point West Lehi; 2001-06-01 to 2002-12-12; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Jack B Parson Companies; 2001-06-01 to 2002-12-12; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → Point West Lehi; 2002-05-30 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Staker & Parson Companies → Point West Lehi; 2002-12-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Staker & Parson Companies; 2002-12-13 to current/open; source msha-controller-operator-history