# Relationship history for MSHA mine 2602571

Current hierarchy: **Sam S Ballard; Marc A Williams; Richard J Williams → Ruby Mountain Rock & Ready- Mix, LLC → Ruby Mountain Rock & Ready-Mix,LLC**

- 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:** Ruby Mountain Sand and Gravel → Ruby Mountain Rock & Ready-Mix,LLC; 2005-08-18 to 2022-03-17; source msha-controller-operator-history
- **controller_controls_mine:** Joe  Culley → Ruby Mountain Rock & Ready-Mix,LLC; 2005-08-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joe  Culley → Ruby Mountain Sand and Gravel; 2005-08-18 to 2022-03-17; source msha-controller-operator-history
- **operator_operates_mine:** Ruby Mountain Rock & Ready- Mix, LLC → Ruby Mountain Rock & Ready-Mix,LLC; 2022-03-18 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Richard J Williams et al → Ruby Mountain Rock & Ready-Mix,LLC; 2022-03-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard J Williams et al → Ruby Mountain Rock & Ready- Mix, LLC; 2022-03-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sam S Ballard et al → Ruby Mountain Rock & Ready- Mix, LLC; 2022-03-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Marc A Williams et al → Ruby Mountain Rock & Ready- Mix, LLC; 2022-03-18 to current/open; source msha-controller-operator-history