# Relationship history for MSHA mine 5001870

Current hierarchy: **Calista Corporation → Brice Incorporated → Brice Inc. Portable #E**

- 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

- **controller_controls_mine:** Sam R  Brice  et al → Brice Inc. Portable #E; 1999-08-28 to 2011-05-18; source msha-controller-operator-history
- **operator_operates_mine:** Browns Hill Quarry LLC → Brice Inc. Portable #E; 2007-08-02 to 2011-05-18; source msha-controller-operator-history
- **controller_controls_operator:** Sam R  Brice  et al → Browns Hill Quarry LLC; 2007-08-02 to 2011-05-18; source msha-controller-operator-history
- **controller_controls_mine:** Sam R  Brice  et al → Brice Inc. Portable #E; 2010-05-20 to 2011-05-18; source msha-controller-operator-history
- **operator_operates_mine:** Brice Incorporated → Brice Inc. Portable #E; 2011-05-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sam R  Brice  et al → Brice Incorporated; 2011-05-19 to 2011-05-18; source msha-controller-operator-history
- **controller_controls_mine:** Calista Corporation → Brice Inc. Portable #E; 2011-05-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Calista Corporation → Browns Hill Quarry LLC; 2011-05-19 to 2011-05-18; source msha-controller-operator-history
- **controller_controls_operator:** Calista Corporation → Brice Incorporated; 2011-05-19 to current/open; source msha-controller-operator-history