# Relationship history for MSHA mine 3609435

Current hierarchy: **Scott B  Kimmel → Kimmel's Mining, Inc → Williamstown Mine #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:** Kimmel's Mining, Inc → Williamstown Mine #1; 2006-07-18 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Scott B  Kimmel → Williamstown Mine #1; 2006-07-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Scott B  Kimmel → Kimmel's Mining, Inc; 2006-07-18 to current/open; source msha-controller-operator-history