# Relationship history for MSHA mine 1513920

Current hierarchy: **Peabody Energy Corporation → Ohio County Coal Company → Dyson Creek Mine**

- 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

- **controller_controls_mine:** Costain Group PLC → Dyson Creek Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Costain Coal Inc → Dyson Creek Mine; 1983-01-01 to 1997-07-20; source msha-controller-operator-history
- **controller_controls_operator:** Costain Group PLC → Costain Coal Inc; 1983-01-01 to 1997-07-20; source msha-controller-operator-history
- **controller_controls_mine:** Peabody Energy Corporation → Dyson Creek Mine; 1995-06-22 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Iracoal Incorporated → Dyson Creek Mine; 1997-01-31 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Lodestar Energy Inc. → Dyson Creek Mine; 1997-07-21 to 2003-07-23; source msha-controller-operator-history
- **controller_controls_operator:** Iracoal Incorporated → Lodestar Energy Inc.; 1997-07-21 to 2003-07-23; source msha-controller-operator-history
- **operator_operates_mine:** American Engineering and Construction Corp → Dyson Creek Mine; 2003-07-24 to 2004-10-10; source msha-controller-operator-history
- **controller_controls_mine:** Timothy P  Smith → Dyson Creek Mine; 2003-07-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Timothy P  Smith → American Engineering and Construction Corp; 2003-07-24 to 2004-10-10; source msha-controller-operator-history
- **operator_operates_mine:** Ohio County Coal Company → Dyson Creek Mine; 2004-10-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Peabody Energy Corporation → Ohio County Coal Company; 2004-10-11 to current/open; source msha-controller-operator-history