# Relationship history for MSHA mine 3001893

Current hierarchy: **Ryan L  Stell; Dale C  Stell; Jared P  Miller → City Hill Aggregates LLC → Hansen Pit**

- 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

- **operator_operates_mine:** Town Of Torrey → Hansen Pit; 1950-01-01 to 2012-03-07; source msha-controller-operator-history
- **controller_controls_mine:** Town Of Torrey-Ny → Hansen Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Town Of Torrey-Ny → Town Of Torrey; 1950-01-01 to 2012-03-07; source msha-controller-operator-history
- **operator_operates_mine:** City Hill Construction Inc → Hansen Pit; 2012-03-08 to 2013-04-30; source msha-controller-operator-history
- **controller_controls_mine:** Timothy I  Hansen → Hansen Pit; 2012-03-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Timothy I  Hansen → City Hill Construction Inc; 2012-03-08 to 2013-04-30; source msha-controller-operator-history
- **operator_operates_mine:** City Hill Aggregates LLC → Hansen Pit; 2013-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dale C  Stell et al → Hansen Pit; 2013-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dale C  Stell et al → City Hill Aggregates LLC; 2013-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ryan L  Stell et al → City Hill Aggregates LLC; 2013-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jared P  Miller et al → City Hill Aggregates LLC; 2013-05-01 to current/open; source msha-controller-operator-history