# Relationship history for MSHA mine 3304805

Current hierarchy: **Elizabeth  Cogley; Matthew  Cogley → ALL Excavating & Demolition, Ltd. → McCloskey R230 Screener**

- 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

- **operator_operates_mine:** ALL Excavating & Demolition, Ltd. → McCloskey R230 Screener; 2024-05-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Elizabeth  Cogley et al → McCloskey R230 Screener; 2024-05-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Elizabeth  Cogley et al → ALL Excavating & Demolition, Ltd.; 2024-05-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Matthew  Cogley et al → ALL Excavating & Demolition, Ltd.; 2024-05-15 to current/open; source msha-controller-operator-history