# Relationship history for MSHA mine 4003245

Current hierarchy: **Jon Munroe  Kraus → Silvara Stone Co., LLC → Williams Family Stone Quarry #1**

- 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:** BMJ Stone Co #2 → Williams Family Stone Quarry #1; 2004-10-10 to 2009-03-09; source msha-controller-operator-history
- **controller_controls_mine:** John  Rector  et al → Williams Family Stone Quarry #1; 2004-10-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John  Rector  et al → BMJ Stone Co #2; 2004-10-10 to 2009-03-09; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Rector  et al → BMJ Stone Co #2; 2004-10-10 to 2009-03-09; source msha-controller-operator-history
- **operator_operates_mine:** BMJ Stone Co LLC → Williams Family Stone Quarry #1; 2009-03-10 to 2013-10-27; source msha-controller-operator-history
- **controller_controls_mine:** John  Rector  et al → Williams Family Stone Quarry #1; 2009-03-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John  Rector  et al → BMJ Stone Co LLC; 2009-03-10 to 2013-10-27; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Rector  et al → BMJ Stone Co LLC; 2009-03-10 to 2013-10-27; source msha-controller-operator-history
- **operator_operates_mine:** Williams Family Stone → Williams Family Stone Quarry #1; 2013-10-28 to 2022-01-03; source msha-controller-operator-history
- **controller_controls_mine:** Vance E  Williams → Williams Family Stone Quarry #1; 2013-10-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Vance E  Williams → Williams Family Stone; 2013-10-28 to 2022-01-03; source msha-controller-operator-history
- **controller_controls_mine:** Jon Munroe  Kraus → Williams Family Stone Quarry #1; 2014-01-02 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Silvara Stone Co., LLC → Williams Family Stone Quarry #1; 2022-01-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jon Munroe  Kraus → Silvara Stone Co., LLC; 2022-01-04 to current/open; source msha-controller-operator-history