# Relationship history for MSHA mine 0404948

Current hierarchy: **Henry  Matoza Jr → Hillsdale Rock Company → Paicines 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

- **controller_controls_mine:** Henry  Matoza Jr → Paicines Plant; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Hillsdale Rock Company → Paicines Plant; 1988-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Henry  Matoza Jr → Hillsdale Rock Company; 1988-06-01 to current/open; source msha-controller-operator-history