# Relationship history for MSHA mine 2002996

Current hierarchy: **Brian D Carrick; Mark A Carrick; Dean B Carrick → Carrick Trucking & Gravel Inc. → Carrick Trucking & Gravel Inc.**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **controller_controls_mine:** Brian D  Carrick et al → Carrick Trucking & Gravel Inc.; 1992-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Carrick Gravel & Crushing → Carrick Trucking & Gravel Inc.; 1996-10-01 to 2014-06-22; source msha-controller-operator-history
- **controller_controls_operator:** Brian D  Carrick et al → Carrick Gravel & Crushing; 1996-10-01 to 2014-06-22; source msha-controller-operator-history
- **controller_controls_mine:** Dean B  Carrick → Carrick Trucking & Gravel Inc.; 2014-05-19 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Carrick Trucking & Gravel LLC → Carrick Trucking & Gravel Inc.; 2014-06-23 to 2017-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Dean B  Carrick → Carrick Trucking & Gravel LLC; 2014-06-23 to 2017-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Carrick Trucking & Gravel Inc. → Carrick Trucking & Gravel Inc.; 2018-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dean B Carrick et al → Carrick Trucking & Gravel Inc.; 2018-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dean B Carrick et al → Carrick Trucking & Gravel Inc.; 2018-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mark A Carrick et al → Carrick Trucking & Gravel Inc.; 2018-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brian D Carrick et al → Carrick Trucking & Gravel Inc.; 2018-01-01 to current/open; source msha-controller-operator-history