# Relationship history for MSHA mine 4703659

Current hierarchy: **Michael J Sturm; Cody J Swinkles → Swinkles Trucking & Excavating Corp → Swinkles Screening**

- 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:** Swinkles Trucking & Excavating Corp → Swinkles Screening; 2012-06-12 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James P  Swinkles → Swinkles Screening; 2012-06-12 to 2026-08-31; source msha-controller-operator-history
- **controller_controls_operator:** James P  Swinkles → Swinkles Trucking & Excavating Corp; 2012-06-12 to 2026-08-31; source msha-controller-operator-history
- **controller_controls_mine:** Cody J Swinkles et al → Swinkles Screening; 2026-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cody J Swinkles et al → Swinkles Trucking & Excavating Corp; 2026-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael J Sturm et al → Swinkles Trucking & Excavating Corp; 2026-09-01 to current/open; source msha-controller-operator-history