# Relationship history for MSHA mine 1519668

Current hierarchy: **Damian  Caldwell → Mountainside Coal → Jellico Creek Job**

- 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:** Dan  Chambers et al → Jellico Creek Job; 1983-09-01 to 2013-10-06; source msha-controller-operator-history
- **operator_operates_mine:** Mountainside Coal → Jellico Creek Job; 2012-07-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dan  Chambers et al → Mountainside Coal; 2012-07-09 to 2013-10-06; source msha-controller-operator-history
- **controller_controls_mine:** River Energy JV UK Limited → Jellico Creek Job; 2013-10-07 to 2021-04-15; source msha-controller-operator-history
- **controller_controls_operator:** River Energy JV UK Limited → Mountainside Coal; 2013-10-07 to 2021-04-15; source msha-controller-operator-history
- **controller_controls_mine:** Damian  Caldwell → Jellico Creek Job; 2021-04-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Damian  Caldwell → Mountainside Coal; 2021-04-16 to current/open; source msha-controller-operator-history