# Relationship history for MSHA mine 4801843

Current hierarchy: **Nathan  Mullinax → MULLINAX INC → Portable Crusher 2**

- 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:** Robert  Mullinax → Portable Crusher 2; 1950-01-01 to 2025-04-20; source msha-controller-operator-history
- **operator_operates_mine:** MULLINAX INC → Portable Crusher 2; 2020-12-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert  Mullinax → MULLINAX INC; 2020-12-16 to 2025-04-20; source msha-controller-operator-history
- **controller_controls_mine:** Nathan  Mullinax → Portable Crusher 2; 2025-04-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Nathan  Mullinax → MULLINAX INC; 2025-04-21 to current/open; source msha-controller-operator-history