# Relationship history for MSHA mine 4605483

Current hierarchy: **Eckenberger Jim D → Kimberly Coal Mines Inc → Kimberly Mine No 1**

- 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:** Kimberly Coal Mines Inc → Kimberly Mine No 1; 1977-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Eckenberger Jim D → Kimberly Mine No 1; 1977-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Eckenberger Jim D → Kimberly Coal Mines Inc; 1977-04-01 to current/open; source msha-controller-operator-history