# Relationship history for MSHA mine 4103106

Current hierarchy: **Dement Ivan → Ivan Dement Inc → Whiling Baptist College Pit No 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Dement Ivan → Whiling Baptist College Pit No 1; 1978-03-09 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Ivan Dement Inc → Whiling Baptist College Pit No 1; 1981-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dement Ivan → Ivan Dement Inc; 1981-11-01 to current/open; source msha-controller-operator-history