# Relationship history for MSHA mine 1519782

Current hierarchy: **Goldia  Crain → K.D. Crain & Sons, Inc. → Dodge Hill Carbon Recovery**

- 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:** Goldia  Crain → Dodge Hill Carbon Recovery; 2006-05-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** K.D. Crain & Sons, Inc. → Dodge Hill Carbon Recovery; 2015-08-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Goldia  Crain → K.D. Crain & Sons, Inc.; 2015-08-10 to current/open; source msha-controller-operator-history