# Relationship history for MSHA mine 3606844

Current hierarchy: **Naples Michael Jr → L D V F Associates → Midvalley Refuse Bank**

- 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:** L D V F Associates → Midvalley Refuse Bank; 1979-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Naples Michael Jr Et Al → Midvalley Refuse Bank; 1979-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Naples Michael Jr Et Al → L D V F Associates; 1979-07-01 to current/open; source msha-controller-operator-history