# Relationship history for MSHA mine 1302232

Current hierarchy: **Bill  Winn → Jefferson County Quarry Inc → Jefferson County Quarry Inc**

- 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

- **controller_controls_mine:** Bill  Winn → Jefferson County Quarry Inc; 1998-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** McNichols Aggregate Crushing Inc → Jefferson County Quarry Inc; 1999-08-01 to 2005-04-03; source msha-controller-operator-history
- **controller_controls_mine:** Mike  McNichols → Jefferson County Quarry Inc; 1999-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mike  McNichols → McNichols Aggregate Crushing Inc; 1999-08-01 to 2005-04-03; source msha-controller-operator-history
- **controller_controls_mine:** Bill  Winn → Jefferson County Quarry Inc; 2002-11-04 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Jefferson Co. Quarry Inc. → Jefferson County Quarry Inc; 2005-04-04 to 2007-09-06; source msha-controller-operator-history
- **controller_controls_operator:** Bill  Winn → Jefferson Co. Quarry Inc.; 2005-04-04 to 2007-09-06; source msha-controller-operator-history
- **operator_operates_mine:** Winn Corp. → Jefferson County Quarry Inc; 2007-09-07 to 2008-01-07; source msha-controller-operator-history
- **controller_controls_operator:** Bill  Winn → Winn Corp.; 2007-09-07 to 2008-01-07; source msha-controller-operator-history
- **operator_operates_mine:** Jefferson County Quarry Inc → Jefferson County Quarry Inc; 2008-01-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bill  Winn → Jefferson County Quarry Inc; 2008-01-08 to current/open; source msha-controller-operator-history