# Relationship history for MSHA mine 5100154

Current hierarchy: **Allied Aggregates Corp → Allied Aggregates Corp → Manawainui Plant**

- 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:** Pacific Concrete & Rock Company Ltd → Manawainui Plant; 1950-01-01 to 1979-01-08; source msha-controller-operator-history
- **controller_controls_mine:** Baker Hughes Inc → Manawainui Plant; 1950-01-01 to 1984-04-16; source msha-controller-operator-history
- **controller_controls_operator:** Baker Hughes Inc → Pacific Concrete & Rock Company Ltd; 1950-01-01 to 1979-01-08; source msha-controller-operator-history
- **controller_controls_mine:** Allied Aggregates Corp → Manawainui Plant; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Allied Aggregates Corp → Manawainui Plant; 1979-01-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Allied Aggregates Corp → Allied Aggregates Corp; 1979-01-09 to current/open; source msha-controller-operator-history