# Relationship history for MSHA mine 3606142

Current hierarchy: **John B  Haines IV; John R  Kibblehouse → Colony Materials-Div/Haines & Kibblehouse → COLONY MATERIALS**

- 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:** Vernon Horn → COLONY MATERIALS; 1950-01-01 to 1982-01-18; source msha-controller-operator-history
- **controller_controls_mine:** Horn Vernon → COLONY MATERIALS; 1950-01-01 to 1982-01-18; source msha-controller-operator-history
- **controller_controls_operator:** Horn Vernon → Vernon Horn; 1950-01-01 to 1982-01-18; source msha-controller-operator-history
- **operator_operates_mine:** Colony Materials-Div/Haines & Kibblehouse → COLONY MATERIALS; 1982-01-19 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John B  Haines IV et al → COLONY MATERIALS; 1982-01-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John B  Haines IV et al → Colony Materials-Div/Haines & Kibblehouse; 1982-01-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John R  Kibblehouse et al → Colony Materials-Div/Haines & Kibblehouse; 1982-01-19 to current/open; source msha-controller-operator-history