# Relationship history for MSHA mine 1700789

Current hierarchy: **David  Haley; Scott  Millbury → M + H Logging LLC → Rangeley 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:** M + H Logging LLC → Rangeley Sand & Gravel; 2005-10-26 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Scott  Millbury et al → Rangeley Sand & Gravel; 2005-10-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Scott  Millbury et al → M + H Logging LLC; 2005-10-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David  Haley et al → M + H Logging LLC; 2005-10-26 to current/open; source msha-controller-operator-history