# Relationship history for MSHA mine 4600005

Current hierarchy: **CRH PLC → Appalachian Aggregates, LLC → MILL POINT QUARRY**

- 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:** Seneca Quarries Inc → MILL POINT QUARRY; 1950-01-01 to 1996-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Fred  Burns Sr → MILL POINT QUARRY; 1950-01-01 to 1996-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Fred  Burns Sr → Seneca Quarries Inc; 1950-01-01 to 1996-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Boxley Materials Co → MILL POINT QUARRY; 1991-03-01 to 2015-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Waco Stone → MILL POINT QUARRY; 1997-01-01 to 2000-04-07; source msha-controller-operator-history
- **controller_controls_mine:** I L  Morris → MILL POINT QUARRY; 1997-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** I L  Morris → Waco Stone; 1997-01-01 to 2000-04-07; source msha-controller-operator-history
- **operator_operates_mine:** Southern Wv Asphalt Inc → MILL POINT QUARRY; 2000-04-08 to 2002-05-07; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → MILL POINT QUARRY; 2000-04-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Southern Wv Asphalt Inc; 2000-04-08 to 2002-05-07; source msha-controller-operator-history
- **operator_operates_mine:** Appalachian Aggregates, LLC → MILL POINT QUARRY; 2002-05-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Boxley Materials Co → Appalachian Aggregates, LLC; 2002-05-08 to 2015-12-31; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → MILL POINT QUARRY; 2016-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Appalachian Aggregates, LLC; 2016-01-01 to current/open; source msha-controller-operator-history