# Relationship history for MSHA mine 4406967

Current hierarchy: **Adams Construction Company → Adams Construction Co → DAN RIVER SAND PIT**

- 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:** Adams Construction Company → DAN RIVER SAND PIT; 1983-08-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** M C Construction Company Inc → DAN RIVER SAND PIT; 1999-09-01 to 1999-12-05; source msha-controller-operator-history
- **controller_controls_mine:** M C  Day III et al → DAN RIVER SAND PIT; 1999-09-01 to 1999-12-05; source msha-controller-operator-history
- **controller_controls_operator:** M C  Day III et al → M C Construction Company Inc; 1999-09-01 to 1999-12-05; source msha-controller-operator-history
- **operator_operates_mine:** Virginia Carolina Paving → DAN RIVER SAND PIT; 1999-12-06 to 2008-03-02; source msha-controller-operator-history
- **controller_controls_mine:** English Construction Company Inc → DAN RIVER SAND PIT; 1999-12-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** English Construction Company Inc → Virginia Carolina Paving; 1999-12-06 to 2008-03-02; source msha-controller-operator-history
- **operator_operates_mine:** Adams Construction Co → DAN RIVER SAND PIT; 2008-03-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Adams Construction Company → Adams Construction Co; 2008-03-03 to current/open; source msha-controller-operator-history