# Relationship history for MSHA mine 3608463

Current hierarchy: **John B  Haines IV; John R  Kibblehouse → Jamico Materials → JAMICO 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Jamico Materials → JAMICO MATERIALS; 1994-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John B  Haines IV et al → JAMICO MATERIALS; 1994-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John B  Haines IV et al → Jamico Materials; 1994-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John R  Kibblehouse et al → Jamico Materials; 1994-03-01 to current/open; source msha-controller-operator-history