# Relationship history for MSHA mine 2104071

Current hierarchy: **Michael  Flatley; John  McCorison → JMF Construction,Inc. → JMF Gravel 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:** JMF Construction,Inc. → JMF Gravel Pit; 2024-05-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John  McCorison → JMF Gravel Pit; 2024-05-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John  McCorison → JMF Construction,Inc.; 2024-05-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Flatley → JMF Construction,Inc.; 2024-05-14 to current/open; source msha-controller-operator-history