# Relationship history for MSHA mine 1001795

Current hierarchy: **Robert G  Amidon → Rocky Mountain Paving, Inc. → Rocky Mountain Gravel Pit**

- 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:** Gillette Gary L → Rocky Mountain Gravel Pit; 1986-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Double G Company → Rocky Mountain Gravel Pit; 1987-07-01 to 1988-07-10; source msha-controller-operator-history
- **controller_controls_operator:** Gillette Gary L → Double G Company; 1987-07-01 to 1988-07-10; source msha-controller-operator-history
- **controller_controls_mine:** Mike  Turner → Rocky Mountain Gravel Pit; 1988-06-15 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Apple Sand & Gravel → Rocky Mountain Gravel Pit; 1988-07-11 to 1995-05-15; source msha-controller-operator-history
- **controller_controls_mine:** Clifford  Everman → Rocky Mountain Gravel Pit; 1988-07-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Clifford  Everman → Apple Sand & Gravel; 1988-07-11 to 1995-05-15; source msha-controller-operator-history
- **operator_operates_mine:** Turner Sand & Gravel Inc → Rocky Mountain Gravel Pit; 1995-05-16 to 2005-07-05; source msha-controller-operator-history
- **controller_controls_operator:** Mike  Turner → Turner Sand & Gravel Inc; 1995-05-16 to 2005-07-05; source msha-controller-operator-history
- **operator_operates_mine:** Treasure Valley Sand & Gravel LLC → Rocky Mountain Gravel Pit; 2005-07-06 to 2006-07-19; source msha-controller-operator-history
- **controller_controls_mine:** Mike  Turner → Rocky Mountain Gravel Pit; 2005-07-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mike  Turner → Treasure Valley Sand & Gravel LLC; 2005-07-06 to 2006-07-19; source msha-controller-operator-history
- **operator_operates_mine:** Rocky Mountain Paving, Inc. → Rocky Mountain Gravel Pit; 2006-07-20 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Robert G  Amidon → Rocky Mountain Gravel Pit; 2006-07-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert G  Amidon → Rocky Mountain Paving, Inc.; 2006-07-20 to current/open; source msha-controller-operator-history