# Relationship history for MSHA mine 3201054

Current hierarchy: **Joe J  Ottesen → Ottesen Sand & Gravel, Inc → Plant# 3**

- 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:** Joe J  Ottesen → Plant# 3; 2011-10-28 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Ottesen Sand & Gravel, Inc → Plant# 3; 2015-06-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joe J  Ottesen → Ottesen Sand & Gravel, Inc; 2015-06-12 to current/open; source msha-controller-operator-history