# Relationship history for MSHA mine 3301188

Current hierarchy: **Brad  Miller → Cardinal Aggregate → Cardinal Aggregate/Port Clinton**

- 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:** Celotex Corp → Cardinal Aggregate/Port Clinton; 1950-01-01 to 1997-05-29; source msha-controller-operator-history
- **controller_controls_mine:** Jim Walter Corp → Cardinal Aggregate/Port Clinton; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jim Walter Corp → Celotex Corp; 1950-01-01 to 1997-05-29; source msha-controller-operator-history
- **operator_operates_mine:** Celotex Corp → Cardinal Aggregate/Port Clinton; 1997-05-30 to 2000-07-25; source msha-controller-operator-history
- **controller_controls_mine:** Asbestos Settlement Trust → Cardinal Aggregate/Port Clinton; 1997-05-30 to 2000-07-25; source msha-controller-operator-history
- **controller_controls_operator:** Asbestos Settlement Trust → Celotex Corp; 1997-05-30 to 2000-07-25; source msha-controller-operator-history
- **operator_operates_mine:** Bpb America Inc → Cardinal Aggregate/Port Clinton; 2000-07-26 to 2002-04-17; source msha-controller-operator-history
- **controller_controls_mine:** BPB Plc → Cardinal Aggregate/Port Clinton; 2000-07-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** BPB Plc → Bpb America Inc; 2000-07-26 to 2002-04-17; source msha-controller-operator-history
- **operator_operates_mine:** Cardinal Aggregate → Cardinal Aggregate/Port Clinton; 2002-04-18 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mark  Murray → Cardinal Aggregate/Port Clinton; 2002-04-18 to 2015-08-16; source msha-controller-operator-history
- **controller_controls_operator:** Mark  Murray → Cardinal Aggregate; 2002-04-18 to 2015-08-16; source msha-controller-operator-history
- **controller_controls_mine:** Dean E Miller → Cardinal Aggregate/Port Clinton; 2015-08-17 to 2015-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Dean E Miller → Cardinal Aggregate; 2015-08-17 to 2015-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Brad  Miller → Cardinal Aggregate/Port Clinton; 2016-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brad  Miller → Cardinal Aggregate; 2016-01-01 to current/open; source msha-controller-operator-history