# Relationship history for MSHA mine 2602801

Current hierarchy: **Daniel F Coons; Kelly L Coons → V & T Rock Inc. → Moundhouse Aggregate Pit**

- 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

- **operator_operates_mine:** V & T Rock Inc. → Moundhouse Aggregate Pit; 2016-08-12 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Daniel F Coons et al → Moundhouse Aggregate Pit; 2016-08-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Daniel F Coons et al → V & T Rock Inc.; 2016-08-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kelly L Coons et al → V & T Rock Inc.; 2016-08-12 to current/open; source msha-controller-operator-history