# Relationship history for MSHA mine 2103696

Current hierarchy: **Tom  Egge → 71 Aggregate, Inc → KPI 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:** Chad  Monson → KPI Track Jaw; 2008-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Monson Corporation → KPI Track Jaw; 2010-04-28 to 2013-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Chad  Monson → Monson Corporation; 2010-04-28 to 2013-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Gary Monson Excavating, LLC → KPI Track Jaw; 2014-01-01 to 2016-08-21; source msha-controller-operator-history
- **controller_controls_mine:** Gary L Monson → KPI Track Jaw; 2014-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gary L Monson → Gary Monson Excavating, LLC; 2014-01-01 to 2016-08-21; source msha-controller-operator-history
- **operator_operates_mine:** 71 Aggregate, Inc → KPI Track Jaw; 2016-08-22 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Tom  Egge → KPI Track Jaw; 2016-08-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tom  Egge → 71 Aggregate, Inc; 2016-08-22 to current/open; source msha-controller-operator-history