# Relationship history for MSHA mine 3004045

Current hierarchy: **D A Collins Construction Company Inc → JOINTA LIME COMPANY → WILLSBORO STONE 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

- **controller_controls_mine:** D A Collins Construction Company Inc → WILLSBORO STONE QUARRY; 1991-11-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Jointa Lime Company → WILLSBORO STONE QUARRY; 2019-10-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** D A Collins Construction Company Inc → Jointa Lime Company; 2019-10-08 to current/open; source msha-controller-operator-history