# Relationship history for MSHA mine 0103465

Current hierarchy: **Glenn  Ellison → The Rock Shop → Happy Hill**

- 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:** The Rock Shop → Happy Hill; 2013-06-19 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Glenn  Ellison → Happy Hill; 2013-06-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Glenn  Ellison → The Rock Shop; 2013-06-19 to current/open; source msha-controller-operator-history