# Relationship history for MSHA mine 4002558

Current hierarchy: **Vulcan Materials Company → Vulcan Constr. Materials, L.P. → Decatur County**

- 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) → Decatur County; 1950-01-01 to 2007-11-15; source msha-controller-operator-history
- **operator_operates_mine:** Jeanette Rock Company Inc → Decatur County; 1979-01-01 to 1983-05-10; source msha-controller-operator-history
- **controller_controls_mine:** Davie  McClanahan et al → Decatur County; 1979-01-01 to 1983-05-10; source msha-controller-operator-history
- **controller_controls_operator:** Davie  McClanahan et al → Jeanette Rock Company Inc; 1979-01-01 to 1983-05-10; source msha-controller-operator-history
- **operator_operates_mine:** Mc Clanahan Rock Products → Decatur County; 1983-05-11 to 1998-03-08; source msha-controller-operator-history
- **controller_controls_mine:** Davie M  McClanahan → Decatur County; 1983-05-11 to 1998-03-08; source msha-controller-operator-history
- **controller_controls_operator:** Davie M  McClanahan → Mc Clanahan Rock Products; 1983-05-11 to 1998-03-08; source msha-controller-operator-history
- **operator_operates_mine:** Vulcan Constr. Materials, L.P. → Decatur County; 1998-03-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Legacy Vulcan Corp (Form:Vulcan Materials Co) → Vulcan Constr. Materials, L.P.; 1998-03-09 to 2007-11-15; source msha-controller-operator-history
- **controller_controls_mine:** Vulcan Materials Company → Decatur County; 2007-11-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Vulcan Materials Company → Vulcan Constr. Materials, L.P.; 2007-11-16 to current/open; source msha-controller-operator-history