# Relationship history for MSHA mine 3608674

Current hierarchy: **Kenneth M  Pollock → Heavy Media Inc → Loree Silt Basin & Bank Operation**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Kenneth M  Pollock et al → Loree Silt Basin & Bank Operation; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Heavy Media Inc → Loree Silt Basin & Bank Operation; 1994-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kenneth M  Pollock et al → Heavy Media Inc; 1994-05-01 to current/open; source msha-controller-operator-history