# Relationship history for MSHA mine 3401923

Current hierarchy: **Nathan L  Honeycutt → H & H Sand & Gravel LLC → BFE-1**

- 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:** H & H Sand & Gravel LLC → BFE-1; 2004-01-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Nathan L  Honeycutt → BFE-1; 2004-01-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Nathan L  Honeycutt → H & H Sand & Gravel LLC; 2004-01-10 to current/open; source msha-controller-operator-history