# Relationship history for MSHA mine 4000080

Current hierarchy: **Rogers Group Inc → Rogers Group Inc. → Cookeville Quarry**

- 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:** Rogers Group Inc → Cookeville Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Putnam County Highway Department → Cookeville Quarry; 1950-01-01 to 2004-11-28; source msha-controller-operator-history
- **controller_controls_mine:** Putnam County-Tn → Cookeville Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Putnam County-Tn → Putnam County Highway Department; 1950-01-01 to 2004-11-28; source msha-controller-operator-history
- **operator_operates_mine:** Cookeville Limestone LLC → Cookeville Quarry; 2004-11-29 to 2013-08-01; source msha-controller-operator-history
- **controller_controls_mine:** Don O  Johnson  et al → Cookeville Quarry; 2004-11-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Don O  Johnson  et al → Cookeville Limestone LLC; 2004-11-29 to 2013-08-01; source msha-controller-operator-history
- **controller_controls_operator:** Bruce  Mc Cormick  et al → Cookeville Limestone LLC; 2004-11-29 to 2013-08-01; source msha-controller-operator-history
- **operator_operates_mine:** Rogers Group Inc. → Cookeville Quarry; 2013-08-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rogers Group Inc → Rogers Group Inc.; 2013-08-02 to current/open; source msha-controller-operator-history