# Relationship history for MSHA mine 3201045

Current hierarchy: **John  Melgaard; Kyle  True → Prism Logisitics, LLC → Track Jaw**

- 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

- **controller_controls_mine:** John E  Melgaard Sr. → Track Jaw; 2001-09-01 to 2018-09-30; source msha-controller-operator-history
- **operator_operates_mine:** Melgaard Construction → Track Jaw; 2014-10-31 to 2023-01-31; source msha-controller-operator-history
- **controller_controls_operator:** John E  Melgaard Sr. → Melgaard Construction; 2014-10-31 to 2018-09-30; source msha-controller-operator-history
- **controller_controls_mine:** John E  Melgaard Jr → Track Jaw; 2018-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John E  Melgaard Jr → Melgaard Construction; 2018-10-01 to 2023-01-31; source msha-controller-operator-history
- **operator_operates_mine:** Prism Logisitics, LLC → Track Jaw; 2023-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John  Melgaard et al → Track Jaw; 2023-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John  Melgaard et al → Prism Logisitics, LLC; 2023-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kyle  True et al → Prism Logisitics, LLC; 2023-02-01 to current/open; source msha-controller-operator-history