# Relationship history for MSHA mine 3304462

Current hierarchy: **Gerry  Salisbury; Mark  Salisbury; Denny  Salisbury → Tow Path Ready Mix → Tow Path Ready Mix**

- 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:** Tow Path Ready Mix → Tow Path Ready Mix; 2000-06-01 to 2015-09-20; source msha-controller-operator-history
- **controller_controls_mine:** Thomas P  Salisbury et al → Tow Path Ready Mix; 2000-06-01 to 2014-11-29; source msha-controller-operator-history
- **controller_controls_operator:** Thomas P  Salisbury et al → Tow Path Ready Mix; 2000-06-01 to 2014-11-29; source msha-controller-operator-history
- **controller_controls_mine:** James P  Jurgensen → Tow Path Ready Mix; 2004-01-21 to 2018-10-31; source msha-controller-operator-history
- **controller_controls_mine:** Denny  Salisbury et al → Tow Path Ready Mix; 2014-11-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Denny  Salisbury et al → Tow Path Ready Mix; 2014-11-30 to 2015-09-20; source msha-controller-operator-history
- **controller_controls_operator:** Gerry  Salisbury et al → Tow Path Ready Mix; 2014-11-30 to 2015-09-20; source msha-controller-operator-history
- **controller_controls_operator:** Mark  Salisbury et al → Tow Path Ready Mix; 2014-11-30 to 2015-09-20; source msha-controller-operator-history
- **operator_operates_mine:** Latham Limestone LLC → Tow Path Ready Mix; 2015-09-21 to 2018-12-02; source msha-controller-operator-history
- **controller_controls_operator:** James P  Jurgensen → Latham Limestone LLC; 2015-09-21 to 2018-10-31; source msha-controller-operator-history
- **controller_controls_mine:** Jacqueline J  Alf et al → Tow Path Ready Mix; 2018-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jacqueline J  Alf et al → Latham Limestone LLC; 2018-11-01 to 2018-12-02; source msha-controller-operator-history
- **controller_controls_operator:** Jason R  Jurgensen et al → Latham Limestone LLC; 2018-11-01 to 2018-12-02; source msha-controller-operator-history
- **controller_controls_operator:** James P  Jurgensen II et al → Latham Limestone LLC; 2018-11-01 to 2018-12-02; source msha-controller-operator-history
- **operator_operates_mine:** Tow Path Ready Mix → Tow Path Ready Mix; 2018-12-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mark  Salisbury et al → Tow Path Ready Mix; 2018-12-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Denny  Salisbury et al → Tow Path Ready Mix; 2018-12-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gerry  Salisbury et al → Tow Path Ready Mix; 2018-12-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Thomas P  Salisbury et al → Tow Path Ready Mix; 2018-12-03 to 2014-11-29; source msha-controller-operator-history