# Relationship history for MSHA mine 4104210

Current hierarchy: **Ingram Readymix → Ingram Readymix No. 87, L.L.C. → BRONTE PLANT**

- 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:** Legacy Vulcan Corp (Form:Vulcan Materials Co) → BRONTE PLANT; 1950-01-01 to 2007-11-15; source msha-controller-operator-history
- **controller_controls_mine:** J B  Fraley → BRONTE PLANT; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Atlas Concrete Inc → BRONTE PLANT; 1988-05-02 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Sanco Materials Company → BRONTE PLANT; 2000-08-01 to 2001-03-31; source msha-controller-operator-history
- **controller_controls_operator:** J B  Fraley → Sanco Materials Company; 2000-08-01 to 2001-03-31; source msha-controller-operator-history
- **operator_operates_mine:** Sanco Materials Company → BRONTE PLANT; 2001-04-01 to 2006-07-04; source msha-controller-operator-history
- **controller_controls_mine:** Jerry  Roberts → BRONTE PLANT; 2001-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jerry  Roberts → Sanco Materials Company; 2001-04-01 to 2006-07-04; source msha-controller-operator-history
- **operator_operates_mine:** Ingram Enterprises LP → BRONTE PLANT; 2006-07-05 to 2008-02-29; source msha-controller-operator-history
- **controller_controls_operator:** Atlas Concrete Inc → Ingram Enterprises LP; 2006-07-05 to 2008-02-29; source msha-controller-operator-history
- **controller_controls_mine:** Vulcan Materials Company → BRONTE PLANT; 2007-11-16 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Ingram Concrete LLC → BRONTE PLANT; 2008-03-01 to 2021-10-31; source msha-controller-operator-history
- **controller_controls_mine:** US Concrete → BRONTE PLANT; 2008-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** US Concrete → Ingram Concrete LLC; 2008-03-01 to 2021-10-31; source msha-controller-operator-history
- **operator_operates_mine:** Vulcan Construction Materials, LLC → BRONTE PLANT; 2021-11-01 to 2025-02-10; source msha-controller-operator-history
- **controller_controls_operator:** Vulcan Materials Company → Vulcan Construction Materials, LLC; 2021-11-01 to 2025-02-10; source msha-controller-operator-history
- **controller_controls_operator:** Legacy Vulcan Corp (Form:Vulcan Materials Co) → Vulcan Construction Materials, LLC; 2021-11-01 to 2007-11-15; source msha-controller-operator-history
- **operator_operates_mine:** Ingram Readymix No. 87, L.L.C. → BRONTE PLANT; 2025-02-11 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ingram Readymix → BRONTE PLANT; 2025-02-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ingram Readymix → Ingram Readymix No. 87, L.L.C.; 2025-02-11 to current/open; source msha-controller-operator-history