# Relationship history for MSHA mine 4300548

Current hierarchy: **Ian Daniel McCullough; Matthew  Dwire → McCullough Crushing Inc → C22-C20**

- 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 → C22-C20; 1985-06-01 to 2019-12-31; source msha-controller-operator-history
- **operator_operates_mine:** McCullough Crushing Inc → C22-C20; 2000-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Scott  Mc Cullough et al → McCullough Crushing Inc; 2000-08-01 to 2019-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Frederick W  McCullough → C22-C20; 2020-01-01 to 2023-07-31; source msha-controller-operator-history
- **controller_controls_operator:** Frederick W  McCullough → McCullough Crushing Inc; 2020-01-01 to 2023-07-31; source msha-controller-operator-history
- **controller_controls_mine:** Matthew  Dwire et al → C22-C20; 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
- **controller_controls_operator:** Ian Daniel McCullough et al → McCullough Crushing Inc; 2023-08-01 to current/open; source msha-controller-operator-history