# Relationship history for MSHA mine 2302025

Current hierarchy: **Kenda K Hopkins; Blaine D Coleman; Corey  Coleman → K & D Crushing Inc → Portable Plant #2**

- 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:** K & D Crushing Inc → Portable Plant #2; 1990-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Derrick K  Coleman → Portable Plant #2; 1990-07-01 to 2024-03-31; source msha-controller-operator-history
- **controller_controls_operator:** Derrick K  Coleman → K & D Crushing Inc; 1990-07-01 to 2024-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Kenda K Hopkins et al → Portable Plant #2; 2024-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kenda K Hopkins et al → K & D Crushing Inc; 2024-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Corey  Coleman et al → K & D Crushing Inc; 2024-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Blaine D Coleman et al → K & D Crushing Inc; 2024-04-01 to current/open; source msha-controller-operator-history