# Relationship history for MSHA mine 2103796

Current hierarchy: **Diane  Kongsjord; Ray  Kongsjord → RK Construction Services Inc → Commander**

- 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:** RK Construction Services Inc → Commander; 2013-05-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Diane  Kongsjord et al → Commander; 2013-05-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Diane  Kongsjord et al → RK Construction Services Inc; 2013-05-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ray  Kongsjord et al → RK Construction Services Inc; 2013-05-08 to current/open; source msha-controller-operator-history