# Relationship history for MSHA mine 3401813

Current hierarchy: **Dustin  Cooper → Cooper Stone LLC → St Clair 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:** Marble City Stone → St Clair Quarry; 1998-09-01 to 2013-02-03; source msha-controller-operator-history
- **controller_controls_mine:** Ed  Reeves → St Clair Quarry; 1998-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ed  Reeves → Marble City Stone; 1998-09-01 to 2013-02-03; source msha-controller-operator-history
- **controller_controls_mine:** Jeff  Byler → St Clair Quarry; 2009-06-09 to 2014-10-14; source msha-controller-operator-history
- **operator_operates_mine:** Marble City-Cedar Ridge Quarries → St Clair Quarry; 2013-02-04 to 2015-11-29; source msha-controller-operator-history
- **controller_controls_operator:** Jeff  Byler → Marble City-Cedar Ridge Quarries; 2013-02-04 to 2014-10-14; source msha-controller-operator-history
- **controller_controls_mine:** Bill  Bogle → St Clair Quarry; 2014-10-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bill  Bogle → Marble City-Cedar Ridge Quarries; 2014-10-15 to 2015-11-29; source msha-controller-operator-history
- **operator_operates_mine:** Polycor Oklahoma Inc. → St Clair Quarry; 2015-11-30 to 2023-07-12; source msha-controller-operator-history
- **controller_controls_mine:** Polycor Inc → St Clair Quarry; 2015-11-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Polycor Inc → Polycor Oklahoma Inc.; 2015-11-30 to 2023-07-12; source msha-controller-operator-history
- **operator_operates_mine:** Cooper Stone LLC → St Clair Quarry; 2023-07-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dustin  Cooper → St Clair Quarry; 2023-07-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dustin  Cooper → Cooper Stone LLC; 2023-07-13 to current/open; source msha-controller-operator-history