# Relationship history for MSHA mine 4407119

Current hierarchy: **Adams Construction Company → Adams Construction Co → Turbeville 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Leroy I  McCarty → Turbeville Sand Plant; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Adams Construction Company → Turbeville Sand Plant; 1983-08-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** McCarty Sand Work → Turbeville Sand Plant; 2004-11-23 to 2007-05-29; source msha-controller-operator-history
- **controller_controls_operator:** Leroy I  McCarty → McCarty Sand Work; 2004-11-23 to 2007-05-29; source msha-controller-operator-history
- **operator_operates_mine:** Adams Construction Co → Turbeville Sand Plant; 2007-05-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Adams Construction Company → Adams Construction Co; 2007-05-30 to current/open; source msha-controller-operator-history