# Relationship history for MSHA mine 4003242

Current hierarchy: **Jon Munroe  Kraus → Silvara Stone Co., LLC → Big Lick Quarry**

- 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:** Pendergrass Quarry → Big Lick Quarry; 2004-08-18 to 2008-10-26; source msha-controller-operator-history
- **controller_controls_mine:** William W  Pendergrass → Big Lick Quarry; 2004-08-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William W  Pendergrass → Pendergrass Quarry; 2004-08-18 to 2008-10-26; source msha-controller-operator-history
- **operator_operates_mine:** Big Lick Sawed Stone → Big Lick Quarry; 2008-10-27 to 2012-05-11; source msha-controller-operator-history
- **controller_controls_mine:** William W  Pendergrass → Big Lick Quarry; 2008-10-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William W  Pendergrass → Big Lick Sawed Stone; 2008-10-27 to 2012-05-11; source msha-controller-operator-history
- **operator_operates_mine:** Big Lick Sawed Stone → Big Lick Quarry; 2012-05-12 to 2020-01-26; source msha-controller-operator-history
- **controller_controls_mine:** James Stephen  Goodwin → Big Lick Quarry; 2012-05-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James Stephen  Goodwin → Big Lick Sawed Stone; 2012-05-12 to 2020-01-26; source msha-controller-operator-history
- **controller_controls_mine:** Jon Munroe  Kraus → Big Lick Quarry; 2014-01-02 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Silvara Stone Co., LLC → Big Lick Quarry; 2020-01-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jon Munroe  Kraus → Silvara Stone Co., LLC; 2020-01-27 to current/open; source msha-controller-operator-history