# Relationship history for MSHA mine 0401819

Current hierarchy: **Auburn Manor Holding Corporation; TAMV Properties, LLC → Green Vista Holdings → Bear River Materials**

- 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:** Chevreaux Aggregates Inc → Bear River Materials; 1950-01-01 to 2011-05-05; source msha-controller-operator-history
- **controller_controls_mine:** Chevreaux Joe → Bear River Materials; 1950-01-01 to 2001-11-01; source msha-controller-operator-history
- **controller_controls_operator:** Chevreaux Joe → Chevreaux Aggregates Inc; 1950-01-01 to 2001-11-01; source msha-controller-operator-history
- **controller_controls_mine:** MARTHA  CHEVREAUX → Bear River Materials; 2001-11-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** MARTHA  CHEVREAUX → Chevreaux Aggregates Inc; 2001-11-02 to 2011-05-05; source msha-controller-operator-history
- **operator_operates_mine:** Green Vista Holdings → Bear River Materials; 2011-05-06 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** TAMV Properties, LLC et al → Bear River Materials; 2011-05-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** TAMV Properties, LLC et al → Green Vista Holdings; 2011-05-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Auburn Manor Holding Corporation et al → Green Vista Holdings; 2011-05-06 to current/open; source msha-controller-operator-history