# Relationship history for MSHA mine 4300729

Current hierarchy: **Scott D  Ireland → S. D. Ireland Brothers Corporation → VERMONT AGGREGATES, LLC**

- 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:** Scott D  Ireland → VERMONT AGGREGATES, LLC; 1986-05-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Gray Rock Quarry → VERMONT AGGREGATES, LLC; 2011-04-22 to 2024-11-05; source msha-controller-operator-history
- **controller_controls_mine:** William E  Dailey III → VERMONT AGGREGATES, LLC; 2011-04-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William E  Dailey III → Gray Rock Quarry; 2011-04-22 to 2024-11-05; source msha-controller-operator-history
- **operator_operates_mine:** S. D. Ireland Brothers Corporation → VERMONT AGGREGATES, LLC; 2024-11-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Scott D  Ireland → S. D. Ireland Brothers Corporation; 2024-11-06 to current/open; source msha-controller-operator-history