# Relationship history for MSHA mine 5100165

Current hierarchy: **Russell  Kuwaye → Puna Rock Company Ltd → Keaau Quarry**

- 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:** Puna Rock Company Ltd → Keaau Quarry; 1950-01-01 to 1997-07-06; source msha-controller-operator-history
- **controller_controls_mine:** Allied Aggregates Corp → Keaau Quarry; 1950-01-01 to 1997-07-06; source msha-controller-operator-history
- **controller_controls_operator:** Allied Aggregates Corp → Puna Rock Company Ltd; 1950-01-01 to 1997-07-06; source msha-controller-operator-history
- **operator_operates_mine:** Puna Rock Company Ltd → Keaau Quarry; 1997-07-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Russell  Kuwaye → Keaau Quarry; 1997-07-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Russell  Kuwaye → Puna Rock Company Ltd; 1997-07-07 to current/open; source msha-controller-operator-history