# Relationship history for MSHA mine 4000133

Current hierarchy: **Vulcan Materials Company → Vulcan Construction Materials, LLC → Readyville 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:** Legacy Vulcan Corp (Form:Vulcan Materials Co) → Readyville Quarry; 1950-01-01 to 2007-11-15; source msha-controller-operator-history
- **operator_operates_mine:** Tennessee Paving Company → Readyville Quarry; 1978-03-09 to 1979-12-18; source msha-controller-operator-history
- **controller_controls_mine:** C F W Construction Company Inc → Readyville Quarry; 1978-03-09 to 1979-12-18; source msha-controller-operator-history
- **controller_controls_operator:** C F W Construction Company Inc → Tennessee Paving Company; 1978-03-09 to 1979-12-18; source msha-controller-operator-history
- **operator_operates_mine:** Tillett Brothers Paving Company Inc → Readyville Quarry; 1979-12-19 to 1985-04-07; source msha-controller-operator-history
- **controller_controls_mine:** Gerald  Tillett → Readyville Quarry; 1979-12-19 to 1985-04-07; source msha-controller-operator-history
- **controller_controls_operator:** Gerald  Tillett → Tillett Brothers Paving Company Inc; 1979-12-19 to 1985-04-07; source msha-controller-operator-history
- **operator_operates_mine:** Hurst Construction Company Inc → Readyville Quarry; 1985-04-08 to 1993-02-28; source msha-controller-operator-history
- **controller_controls_mine:** Leonard  Hurst → Readyville Quarry; 1985-04-08 to 1993-02-28; source msha-controller-operator-history
- **controller_controls_operator:** Leonard  Hurst → Hurst Construction Company Inc; 1985-04-08 to 1993-02-28; source msha-controller-operator-history
- **operator_operates_mine:** Vulcan Construction Materials, LLC → Readyville Quarry; 1993-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Legacy Vulcan Corp (Form:Vulcan Materials Co) → Vulcan Construction Materials, LLC; 1993-03-01 to 2007-11-15; source msha-controller-operator-history
- **controller_controls_mine:** Vulcan Materials Company → Readyville Quarry; 2007-11-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Vulcan Materials Company → Vulcan Construction Materials, LLC; 2007-11-16 to current/open; source msha-controller-operator-history