# Relationship history for MSHA mine 1701126

Current hierarchy: **S C Holdings Inc → SARGENT CORPORATION → Astec 3055 Jaw**

- 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:** S C Holdings Inc → Astec 3055 Jaw; 1997-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kevin L  Vining → Astec 3055 Jaw; 2004-04-20 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** E L Vining & Son, Inc. → Astec 3055 Jaw; 2024-07-01 to 2025-12-15; source msha-controller-operator-history
- **controller_controls_operator:** Kevin L  Vining → E L Vining & Son, Inc.; 2024-07-01 to 2025-12-15; source msha-controller-operator-history
- **operator_operates_mine:** SARGENT CORPORATION → Astec 3055 Jaw; 2025-12-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** S C Holdings Inc → SARGENT CORPORATION; 2025-12-16 to current/open; source msha-controller-operator-history