# Relationship history for MSHA mine 3304324

Current hierarchy: **Central Allied Enterprises Inc → Central - Allied Enterprises, Inc. → Central Aggregates Div.**

- 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:** Central Allied Enterprises Inc → Central Aggregates Div.; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Central - Allied Enterprises, Inc. → Central Aggregates Div.; 1994-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Central Allied Enterprises Inc → Central - Allied Enterprises, Inc.; 1994-04-01 to current/open; source msha-controller-operator-history