# Relationship history for MSHA mine 1513012

Current hierarchy: **Denham Charles → Cumberland Resources Inc → Surface Mine 1 Jackson County**

- 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:** Cumberland Resources Inc → Surface Mine 1 Jackson County; 1981-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Denham Charles → Surface Mine 1 Jackson County; 1981-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Denham Charles → Cumberland Resources Inc; 1981-07-01 to current/open; source msha-controller-operator-history