# Relationship history for MSHA mine 4202131

Current hierarchy: **Russ  Witt → Western Construction Materials LLC → Brown Canyon Stone Works 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:** Hi Ball Blasting → Brown Canyon Stone Works LLC; 1995-11-01 to 1997-07-15; source msha-controller-operator-history
- **controller_controls_mine:** David  Whiteley  et al → Brown Canyon Stone Works LLC; 1995-11-01 to 1997-07-15; source msha-controller-operator-history
- **controller_controls_operator:** David  Whiteley  et al → Hi Ball Blasting; 1995-11-01 to 1997-07-15; source msha-controller-operator-history
- **operator_operates_mine:** Acme Stone → Brown Canyon Stone Works LLC; 1997-07-16 to 1999-02-16; source msha-controller-operator-history
- **controller_controls_mine:** Jason  Haas → Brown Canyon Stone Works LLC; 1997-07-16 to 1999-02-16; source msha-controller-operator-history
- **controller_controls_operator:** Jason  Haas → Acme Stone; 1997-07-16 to 1999-02-16; source msha-controller-operator-history
- **operator_operates_mine:** B M W Stone Inc → Brown Canyon Stone Works LLC; 1999-02-17 to 2013-06-24; source msha-controller-operator-history
- **controller_controls_mine:** Mark  Wiles  et al → Brown Canyon Stone Works LLC; 1999-02-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mark  Wiles  et al → B M W Stone Inc; 1999-02-17 to 2013-06-24; source msha-controller-operator-history
- **operator_operates_mine:** Western Construction Materials LLC → Brown Canyon Stone Works LLC; 2013-06-25 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Russ  Witt → Brown Canyon Stone Works LLC; 2013-06-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Russ  Witt → Western Construction Materials LLC; 2013-06-25 to current/open; source msha-controller-operator-history