# Relationship history for MSHA mine 2302248

Current hierarchy: **John  Hilty → Adrian Quarry LLC → Adrian Quarry 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:** Adrian Rock, Inc. → Adrian Quarry LLC; 2002-01-25 to 2003-09-14; source msha-controller-operator-history
- **controller_controls_mine:** Leslie D  Nation → Adrian Quarry LLC; 2002-01-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Leslie D  Nation → Adrian Rock, Inc.; 2002-01-25 to 2003-09-14; source msha-controller-operator-history
- **operator_operates_mine:** Adrian Quarry LLC → Adrian Quarry LLC; 2003-09-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Tom  Ferguson  et al → Adrian Quarry LLC; 2003-09-15 to 2007-10-16; source msha-controller-operator-history
- **controller_controls_operator:** Tom  Ferguson  et al → Adrian Quarry LLC; 2003-09-15 to 2007-10-16; source msha-controller-operator-history
- **controller_controls_operator:** Carl L  Ferguson  et al → Adrian Quarry LLC; 2003-09-15 to 2007-10-16; source msha-controller-operator-history
- **controller_controls_mine:** John  Hilty  et al → Adrian Quarry LLC; 2007-10-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John  Hilty  et al → Adrian Quarry LLC; 2007-10-17 to current/open; source msha-controller-operator-history