# Relationship history for MSHA mine 3100014

Current hierarchy: **CRH PLC → Harrison Construction Co-Div/APAC-Atlantic Inc → Oldcastle Industrial Minerals Inc**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Fletcher Limestone Company Inc → Oldcastle Industrial Minerals Inc; 1950-01-01 to 1979-04-01; source msha-controller-operator-history
- **controller_controls_mine:** Lance Joyce R → Oldcastle Industrial Minerals Inc; 1950-01-01 to 1979-04-01; source msha-controller-operator-history
- **controller_controls_operator:** Lance Joyce R → Fletcher Limestone Company Inc; 1950-01-01 to 1979-04-01; source msha-controller-operator-history
- **operator_operates_mine:** Fletcher Limestone Company Inc → Oldcastle Industrial Minerals Inc; 1979-04-02 to 2006-11-30; source msha-controller-operator-history
- **controller_controls_mine:** Bob  Stevens → Oldcastle Industrial Minerals Inc; 1979-04-02 to 2006-10-11; source msha-controller-operator-history
- **controller_controls_operator:** Bob  Stevens → Fletcher Limestone Company Inc; 1979-04-02 to 2006-10-11; source msha-controller-operator-history
- **controller_controls_mine:** Ashland Inc → Oldcastle Industrial Minerals Inc; 2003-04-01 to 2006-08-27; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → Oldcastle Industrial Minerals Inc; 2005-12-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → Oldcastle Industrial Minerals Inc; 2006-08-28 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → Oldcastle Industrial Minerals Inc; 2006-10-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Fletcher Limestone Company Inc; 2006-10-12 to 2006-11-30; source msha-controller-operator-history
- **operator_operates_mine:** Oldcastle Industrial Minerals Inc → Oldcastle Industrial Minerals Inc; 2006-12-01 to 2011-03-20; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Oldcastle Industrial Minerals Inc; 2006-12-01 to 2011-03-20; source msha-controller-operator-history
- **operator_operates_mine:** Harrison Construction Co-Div/APAC-Atlantic Inc → Oldcastle Industrial Minerals Inc; 2011-03-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ashland Inc → Harrison Construction Co-Div/APAC-Atlantic Inc; 2011-03-21 to 2006-08-27; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Harrison Construction Co-Div/APAC-Atlantic Inc; 2011-03-21 to current/open; source msha-controller-operator-history