# Relationship history for MSHA mine 4202513

Current hierarchy: **Jason L  Carlton → FREEDOM ROCK PRODUCTS LLC. → FREEDOM ROCK PRODUCTS**

- 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:** Terry R Brotherson Excavating, Inc. → FREEDOM ROCK PRODUCTS; 2008-08-21 to 2024-12-17; source msha-controller-operator-history
- **controller_controls_mine:** Terry R  Brotherson → FREEDOM ROCK PRODUCTS; 2008-08-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Terry R  Brotherson → Terry R Brotherson Excavating, Inc.; 2008-08-21 to 2024-12-17; source msha-controller-operator-history
- **operator_operates_mine:** Freedom Rock Products LLC. → FREEDOM ROCK PRODUCTS; 2024-12-18 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jason L  Carlton → FREEDOM ROCK PRODUCTS; 2024-12-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jason L  Carlton → Freedom Rock Products LLC.; 2024-12-18 to current/open; source msha-controller-operator-history