# Relationship history for MSHA mine 0505132

Current hierarchy: **Daniel W  Hunt → Asphalt Specialties Co., Inc → Nelson Mining Resource**

- 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:** Daniel W  Hunt → Nelson Mining Resource; 2000-08-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Asphalt Specialties Co., Inc → Nelson Mining Resource; 2021-01-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Daniel W  Hunt → Asphalt Specialties Co., Inc; 2021-01-15 to current/open; source msha-controller-operator-history