# Relationship history for MSHA mine 3003165

Current hierarchy: **Noah D Colwell; Daniel H Colwell → Colwell Brothers Construction LLC → Dyer Flat 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:** Dyer Flats Gravel Bed → Dyer Flat Pit; 1996-07-01 to 2003-04-07; source msha-controller-operator-history
- **controller_controls_mine:** Illsley Tom → Dyer Flat Pit; 1996-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Illsley Tom → Dyer Flats Gravel Bed; 1996-07-01 to 2003-04-07; source msha-controller-operator-history
- **controller_controls_mine:** Le Wayne  Colwell  et al → Dyer Flat Pit; 1997-08-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Colwell Bros. → Dyer Flat Pit; 2003-04-08 to 2011-06-30; source msha-controller-operator-history
- **controller_controls_operator:** Le Wayne  Colwell  et al → Colwell Bros.; 2003-04-08 to 2011-06-30; source msha-controller-operator-history
- **controller_controls_operator:** Roger  Colwell  et al → Colwell Bros.; 2003-04-08 to 2011-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Colwell Brothers Construction LLC → Dyer Flat Pit; 2011-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Le Wayne  Colwell  et al → Dyer Flat Pit; 2011-07-01 to 2022-12-30; source msha-controller-operator-history
- **controller_controls_operator:** Le Wayne  Colwell  et al → Colwell Brothers Construction LLC; 2011-07-01 to 2022-12-30; source msha-controller-operator-history
- **controller_controls_operator:** Roger  Colwell  et al → Colwell Brothers Construction LLC; 2011-07-01 to 2022-12-30; source msha-controller-operator-history
- **controller_controls_mine:** Noah D Colwell et al → Dyer Flat Pit; 2022-12-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Noah D Colwell et al → Colwell Brothers Construction LLC; 2022-12-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Daniel H Colwell et al → Colwell Brothers Construction LLC; 2022-12-31 to current/open; source msha-controller-operator-history