# Relationship history for MSHA mine 4407141

Current hierarchy: **Ricky D  Kirk; Jerry  Wells Jr → Carbon River Coal Corporation → DM 24 - Bench**

- 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

- **controller_controls_mine:** Ricky D  Kirk  et al → DM 24 - Bench; 1984-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Carbon River Coal Corporation → DM 24 - Bench; 2005-06-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ricky D  Kirk  et al → Carbon River Coal Corporation; 2005-06-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jerry  Wells Jr  et al → Carbon River Coal Corporation; 2005-06-30 to current/open; source msha-controller-operator-history