# Relationship history for MSHA mine 0801019

Current hierarchy: **George  Coleman; Hilda  Delaney → GHC  Construction Inc → GHC Construction 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Desoto Shell → GHC Construction Inc; 1984-10-01 to 1997-06-03; source msha-controller-operator-history
- **controller_controls_mine:** George  Coleman → GHC Construction Inc; 1984-10-01 to 1997-06-03; source msha-controller-operator-history
- **controller_controls_operator:** George  Coleman → Desoto Shell; 1984-10-01 to 1997-06-03; source msha-controller-operator-history
- **operator_operates_mine:** GHC  Construction Inc → GHC Construction Inc; 1997-06-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** George  Coleman  et al → GHC Construction Inc; 1997-06-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** George  Coleman  et al → GHC  Construction Inc; 1997-06-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hilda  Delaney  et al → GHC  Construction Inc; 1997-06-04 to current/open; source msha-controller-operator-history