# Relationship history for MSHA mine 3503631

Current hierarchy: **David W  Freeman → Freeman Contracting Inc → Stone Ridge Quarry 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Wild Rivers Rock Inc. → Stone Ridge Quarry LLC; 2006-03-21 to 2006-12-31; source msha-controller-operator-history
- **controller_controls_mine:** David W  Freeman → Stone Ridge Quarry LLC; 2006-03-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David W  Freeman → Wild Rivers Rock Inc.; 2006-03-21 to 2006-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Freeman Contracting Inc → Stone Ridge Quarry LLC; 2007-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** David W  Freeman → Stone Ridge Quarry LLC; 2007-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David W  Freeman → Freeman Contracting Inc; 2007-01-01 to current/open; source msha-controller-operator-history