# Relationship history for MSHA mine 4503525

Current hierarchy: **Mark A Rice → Neilton Landscaping Inc → Quinault Tribal 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:** Neilton Landscaping Inc → Quinault Tribal Quarry; 2003-01-22 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mark A Rice → Quinault Tribal Quarry; 2003-01-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mark A Rice → Neilton Landscaping Inc; 2003-01-22 to current/open; source msha-controller-operator-history