# Relationship history for MSHA mine 2302336

Current hierarchy: **Michael K Farmer; Elliott (Bud) E Farmer → Capital Sand Company → Dredge #6050 (Rae Marie)**

- 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

- **controller_controls_mine:** Elliott (Bud) E Farmer  et al → Dredge #6050 (Rae Marie); 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Capital Sand Company → Dredge #6050 (Rae Marie); 2006-06-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Elliott (Bud) E Farmer  et al → Capital Sand Company; 2006-06-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael K Farmer  et al → Capital Sand Company; 2006-06-09 to current/open; source msha-controller-operator-history