# Relationship history for MSHA mine 2402279

Current hierarchy: **Richard Paul  Lewis; Melissa L  Lewis → Rocky Mountain Rock Inc → Loon Lake**

- 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:** Rocky Mountain Rock Inc → Loon Lake; 2002-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Melissa L  Lewis Et Al → Loon Lake; 2002-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Melissa L  Lewis Et Al → Rocky Mountain Rock Inc; 2002-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard Paul  Lewis Et Al → Rocky Mountain Rock Inc; 2002-05-01 to current/open; source msha-controller-operator-history