# Relationship history for MSHA mine 4801699

Current hierarchy: **Aaron  Powers; Eric  Cole → Powers Excavating, Inc. → Fox Creek Quarry**

- 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:** On the Rocks #9 LLC → Fox Creek Quarry; 2006-07-31 to 2024-04-22; source msha-controller-operator-history
- **controller_controls_mine:** Dwayne (John)  Montoya → Fox Creek Quarry; 2006-07-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dwayne (John)  Montoya → On the Rocks #9 LLC; 2006-07-31 to 2024-04-22; source msha-controller-operator-history
- **operator_operates_mine:** Powers Excavating, Inc. → Fox Creek Quarry; 2024-04-23 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Eric  Cole et al → Fox Creek Quarry; 2024-04-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Eric  Cole et al → Powers Excavating, Inc.; 2024-04-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Aaron  Powers et al → Powers Excavating, Inc.; 2024-04-23 to current/open; source msha-controller-operator-history