# Relationship history for MSHA mine 5001984

Current hierarchy: **Mike S  Dale; Robert  Cabos → Rock & Roll Mining → Rock&Roll Mining**

- 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

- **operator_operates_mine:** Rock & Roll Mining → Rock&Roll Mining; 2012-06-17 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mike S  Dale et al → Rock&Roll Mining; 2012-06-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mike S  Dale et al → Rock & Roll Mining; 2012-06-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert  Cabos et al → Rock & Roll Mining; 2012-06-17 to current/open; source msha-controller-operator-history