# Relationship history for MSHA mine 0400174

Current hierarchy: **Dan  Evans → Evans Brothers Inc → Guadalupe**

- 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:** Quarry Products Inc → Guadalupe; 1950-01-01 to 1986-09-30; source msha-controller-operator-history
- **controller_controls_mine:** Mary  Bottoms → Guadalupe; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mary  Bottoms → Quarry Products Inc; 1950-01-01 to 1986-09-30; source msha-controller-operator-history
- **operator_operates_mine:** American Rock & Asphalt Inc → Guadalupe; 1986-10-01 to 1996-01-04; source msha-controller-operator-history
- **controller_controls_mine:** Sam  Johnson  et al → Guadalupe; 1986-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sam  Johnson  et al → American Rock & Asphalt Inc; 1986-10-01 to 1996-01-04; source msha-controller-operator-history
- **controller_controls_operator:** Ralph  Johnson  et al → American Rock & Asphalt Inc; 1986-10-01 to 1996-01-04; source msha-controller-operator-history
- **operator_operates_mine:** California Rock & Asphalt Inc → Guadalupe; 1996-01-05 to 2007-08-03; source msha-controller-operator-history
- **controller_controls_mine:** Brad  Johnson  et al → Guadalupe; 1996-01-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brad  Johnson  et al → California Rock & Asphalt Inc; 1996-01-05 to 2007-08-03; source msha-controller-operator-history
- **controller_controls_operator:** Estate of David(Sam) Johnson et al → California Rock & Asphalt Inc; 1996-01-05 to 2007-08-03; source msha-controller-operator-history
- **operator_operates_mine:** Evans Brothers Inc → Guadalupe; 2007-08-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dan  Evans  et al → Guadalupe; 2007-08-04 to 2015-06-29; source msha-controller-operator-history
- **controller_controls_operator:** Dan  Evans  et al → Evans Brothers Inc; 2007-08-04 to 2015-06-29; source msha-controller-operator-history
- **controller_controls_operator:** Wayne  Evans  et al → Evans Brothers Inc; 2007-08-04 to 2015-06-29; source msha-controller-operator-history
- **controller_controls_mine:** Dan  Evans → Guadalupe; 2015-06-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dan  Evans → Evans Brothers Inc; 2015-06-30 to current/open; source msha-controller-operator-history