# Relationship history for MSHA mine 2003418

Current hierarchy: **Daniel W  Olds → Olds Sand & Gravel LLC → Olds Sand & Gravel**

- 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

- **operator_operates_mine:** Olds Sand & Gravel LLC → Olds Sand & Gravel; 2008-09-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Daniel W  Olds → Olds Sand & Gravel; 2008-09-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Daniel W  Olds → Olds Sand & Gravel LLC; 2008-09-02 to current/open; source msha-controller-operator-history