# Relationship history for MSHA mine 0202884

Current hierarchy: **Highbridge/Coral Ltd; Rockmore Investment Master Fund Ltd → Arizona Pacific Materials LLC → Queen Creek Mine**

- 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:** Arizona Pacific Materials LLC → Queen Creek Mine; 2000-06-01 to 2009-03-20; source msha-controller-operator-history
- **controller_controls_mine:** Greenberg Trust → Queen Creek Mine; 2000-06-01 to 2004-09-15; source msha-controller-operator-history
- **controller_controls_operator:** Greenberg Trust → Arizona Pacific Materials LLC; 2000-06-01 to 2004-09-15; source msha-controller-operator-history
- **controller_controls_operator:** Pacific Coast Building Products → Arizona Pacific Materials LLC; 2000-06-01 to 2004-09-15; source msha-controller-operator-history
- **controller_controls_mine:** Western Power & Equipment → Queen Creek Mine; 2004-09-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Western Power & Equipment → Arizona Pacific Materials LLC; 2004-09-16 to 2009-03-20; source msha-controller-operator-history
- **operator_operates_mine:** Arizona Pacific Materials LLC → Queen Creek Mine; 2009-03-21 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Highbridge/Coral Ltd  et al → Queen Creek Mine; 2009-03-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Highbridge/Coral Ltd  et al → Arizona Pacific Materials LLC; 2009-03-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rockmore Investment Master Fund Ltd  et al → Arizona Pacific Materials LLC; 2009-03-21 to current/open; source msha-controller-operator-history