# Relationship history for MSHA mine 3503541

Current hierarchy: **Howard M  Day → Hooker Creek Companies,  LLC → SP 10**

- 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:** Howard M  Day → SP 10; 1995-05-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Hooker Creek Companies,  LLC → SP 10; 2001-08-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Howard M  Day → Hooker Creek Companies,  LLC; 2001-08-17 to current/open; source msha-controller-operator-history