# Relationship history for MSHA mine 4002985

Current hierarchy: **Vulcan Materials Company → Vulcan Constr. Materials, L.P. → JASPER SAND 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) → JASPER SAND PLANT; 1950-01-01 to 2007-11-15; source msha-controller-operator-history
- **operator_operates_mine:** Russell Company → JASPER SAND PLANT; 1988-04-01 to 1995-04-25; source msha-controller-operator-history
- **controller_controls_mine:** William S  Russell et al → JASPER SAND PLANT; 1988-04-01 to 1995-04-25; source msha-controller-operator-history
- **controller_controls_operator:** William S  Russell et al → Russell Company; 1988-04-01 to 1995-04-25; source msha-controller-operator-history
- **operator_operates_mine:** Jasper Sand Inc → JASPER SAND PLANT; 1995-04-26 to 1996-11-13; source msha-controller-operator-history
- **controller_controls_mine:** Ray  Howard → JASPER SAND PLANT; 1995-04-26 to 1996-11-13; source msha-controller-operator-history
- **controller_controls_operator:** Ray  Howard → Jasper Sand Inc; 1995-04-26 to 1996-11-13; source msha-controller-operator-history
- **controller_controls_mine:** U S Aggregate Inc → JASPER SAND PLANT; 1996-11-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Bradley Stone & Sand → JASPER SAND PLANT; 1996-11-14 to 2002-05-29; source msha-controller-operator-history
- **controller_controls_operator:** U S Aggregate Inc → Bradley Stone & Sand; 1996-11-14 to 2002-05-29; source msha-controller-operator-history
- **operator_operates_mine:** Vulcan Constr. Materials, L.P. → JASPER SAND PLANT; 2002-05-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Legacy Vulcan Corp (Form:Vulcan Materials Co) → Vulcan Constr. Materials, L.P.; 2002-05-30 to 2007-11-15; source msha-controller-operator-history
- **controller_controls_mine:** Vulcan Materials Company → JASPER SAND PLANT; 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