# Relationship history for MSHA mine 4801898

Current hierarchy: **Nathan  Mullinax → MULLINAX INC → Portable #3**

- 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

- **controller_controls_mine:** Robert  Mullinax → Portable #3; 1950-01-01 to 2025-04-20; source msha-controller-operator-history
- **operator_operates_mine:** MULLINAX INC → Portable #3; 2025-04-21 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Nathan  Mullinax → Portable #3; 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
- **controller_controls_operator:** Robert  Mullinax → MULLINAX INC; 2025-04-21 to 2025-04-20; source msha-controller-operator-history