# Relationship history for MSHA mine 4300098

Current hierarchy: **CRH PLC → Pike Industries Inc → Cooley Sand 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

- **operator_operates_mine:** Cooley Asphalt Paving Corp → Cooley Sand Pit; 1950-01-01 to 1986-05-13; source msha-controller-operator-history
- **controller_controls_mine:** R G  Cooley → Cooley Sand Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** R G  Cooley → Cooley Asphalt Paving Corp; 1950-01-01 to 1986-05-13; source msha-controller-operator-history
- **controller_controls_mine:** Wilfred A  Laprade → Cooley Sand Pit; 1986-05-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Cooley Asphalt Paving Corp → Cooley Sand Pit; 1986-05-14 to 1988-06-01; source msha-controller-operator-history
- **controller_controls_operator:** Wilfred A  Laprade → Cooley Asphalt Paving Corp; 1986-05-14 to 1988-06-01; source msha-controller-operator-history
- **operator_operates_mine:** Pike Industries Inc → Cooley Sand Pit; 1988-06-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → Cooley Sand Pit; 1988-06-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Pike Industries Inc; 1988-06-02 to current/open; source msha-controller-operator-history