# Relationship history for MSHA mine 4000741

Current hierarchy: **David M Rose → Tennessee Building Stone Inc → CROSSVILLE MILL**

- 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

- **operator_operates_mine:** Loeffler Quarries #3 Inc → CROSSVILLE MILL; 1950-01-01 to 1984-12-19; source msha-controller-operator-history
- **controller_controls_mine:** Ervie C A  Mellon → CROSSVILLE MILL; 1950-01-01 to 1984-12-19; source msha-controller-operator-history
- **controller_controls_operator:** Ervie C A  Mellon → Loeffler Quarries #3 Inc; 1950-01-01 to 1984-12-19; source msha-controller-operator-history
- **controller_controls_mine:** David M Rose et al → CROSSVILLE MILL; 1981-02-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Tennessee Building Stone Inc → CROSSVILLE MILL; 1984-12-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David M Rose et al → Tennessee Building Stone Inc; 1984-12-20 to current/open; source msha-controller-operator-history