# Relationship history for MSHA mine 4300502

Current hierarchy: **Ian Daniel McCullough; Matthew  Dwire → McCullough Crushing, Inc. → McBro 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:** Scott  Mc Cullough et al → McBro Quarry; 1985-06-01 to 2019-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Peter L Brousseau et al → McBro Quarry; 1992-08-14 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** F L Brousseau Stone Products → McBro Quarry; 1996-07-01 to 2020-05-31; source msha-controller-operator-history
- **controller_controls_operator:** Peter L Brousseau et al → F L Brousseau Stone Products; 1996-07-01 to 2020-05-31; source msha-controller-operator-history
- **controller_controls_operator:** Eric C Brousseau et al → F L Brousseau Stone Products; 1996-07-01 to 2020-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Frederick W  McCullough → McBro Quarry; 2020-01-01 to 2023-07-31; source msha-controller-operator-history
- **operator_operates_mine:** McCullough Crushing, Inc. → McBro Quarry; 2020-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Frederick W  McCullough → McCullough Crushing, Inc.; 2020-06-01 to 2023-07-31; source msha-controller-operator-history
- **controller_controls_operator:** Scott  Mc Cullough et al → McCullough Crushing, Inc.; 2020-06-01 to 2019-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Ian Daniel McCullough et al → McBro Quarry; 2023-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ian Daniel McCullough et al → McCullough Crushing, Inc.; 2023-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Matthew  Dwire et al → McCullough Crushing, Inc.; 2023-08-01 to current/open; source msha-controller-operator-history