# Relationship history for MSHA mine 2102959

Current hierarchy: **CRH PLC → Minnesota Paving & Materials → 00972**

- 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:** Richard C  Lundin  et al → 00972; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Lundin Construction Company Inc → 00972; 1987-04-01 to 1988-06-30; source msha-controller-operator-history
- **controller_controls_operator:** Richard C  Lundin  et al → Lundin Construction Company Inc; 1987-04-01 to 1988-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Southern Minnesota Construction → 00972; 1988-07-01 to 2010-10-03; source msha-controller-operator-history
- **controller_controls_mine:** Larry V  Nurre → 00972; 1988-07-01 to 2006-03-01; source msha-controller-operator-history
- **controller_controls_operator:** Larry V  Nurre → Southern Minnesota Construction; 1988-07-01 to 2006-03-01; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → 00972; 2006-03-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Southern Minnesota Construction; 2006-03-02 to 2010-10-03; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → 00972; 2008-01-03 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Minnesota Paving & Materials → 00972; 2010-10-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Minnesota Paving & Materials; 2010-10-04 to current/open; source msha-controller-operator-history