# Relationship history for MSHA mine 0504658

Current hierarchy: **Wiiliam T  Lee → Central Aggregates, Inc. → WEST RIFLE PIT**

- 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

- **operator_operates_mine:** Central Aggregates, Inc. → WEST RIFLE PIT; 1999-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Gilbert T  Lee → WEST RIFLE PIT; 1999-05-01 to 2017-01-01; source msha-controller-operator-history
- **controller_controls_operator:** Gilbert T  Lee → Central Aggregates, Inc.; 1999-05-01 to 2017-01-01; source msha-controller-operator-history
- **controller_controls_mine:** Wiiliam T  Lee → WEST RIFLE PIT; 2017-01-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wiiliam T  Lee → Central Aggregates, Inc.; 2017-01-02 to current/open; source msha-controller-operator-history