# Relationship history for MSHA mine 3003182

Current hierarchy: **Dennis  McBride → DIVERSIFIED GRAVEL MINE LLC → DIVERSIFIED GRAVEL MINE, LLC**

- 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:** Tredwell T Place → DIVERSIFIED GRAVEL MINE, LLC; 1997-04-01 to 2003-03-24; source msha-controller-operator-history
- **controller_controls_mine:** Tredwell T  Place → DIVERSIFIED GRAVEL MINE, LLC; 1997-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tredwell T  Place → Tredwell T Place; 1997-04-01 to 2003-03-24; source msha-controller-operator-history
- **operator_operates_mine:** DIVERSIFIED GRAVEL MINE LLC → DIVERSIFIED GRAVEL MINE, LLC; 2003-03-25 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dennis  McBride  et al → DIVERSIFIED GRAVEL MINE, LLC; 2003-03-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dennis  McBride  et al → DIVERSIFIED GRAVEL MINE LLC; 2003-03-25 to current/open; source msha-controller-operator-history