# Relationship history for MSHA mine 1701014

Current hierarchy: **David M Gendron → Gendron Aggregate Supply Inc → JCI Screen Plant**

- 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:** DAVE  GENDRON  ET AL → JCI Screen Plant; 2002-11-21 to 2018-05-09; source msha-controller-operator-history
- **controller_controls_mine:** David M Gendron → JCI Screen Plant; 2018-05-10 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Gendron Aggregate Supply Inc → JCI Screen Plant; 2018-10-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** DAVE  GENDRON  ET AL → Gendron Aggregate Supply Inc; 2018-10-16 to 2018-05-09; source msha-controller-operator-history
- **controller_controls_operator:** JOHN  GENDRON  ET AL → Gendron Aggregate Supply Inc; 2018-10-16 to 2018-05-09; source msha-controller-operator-history
- **controller_controls_operator:** David M Gendron → Gendron Aggregate Supply Inc; 2018-10-16 to current/open; source msha-controller-operator-history