# Relationship history for MSHA mine 3304510

Current hierarchy: **Mark  Murray; Dean  Miller → Melco Inc. → Hazemag Crusher**

- 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:** Melco Inc. → Hazemag Crusher; 2002-08-28 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dean  Miller  et al → Hazemag Crusher; 2002-08-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dean  Miller  et al → Melco Inc.; 2002-08-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mark  Murray  et al → Melco Inc.; 2002-08-28 to current/open; source msha-controller-operator-history