# Relationship history for MSHA mine 2103873

Current hierarchy: **Jules  Blom → Minnesota Cut Stone → MN Black 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:** Minnesota Cut Stone → MN Black 1; 2016-04-11 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jules  Blom → MN Black 1; 2016-04-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jules  Blom → Minnesota Cut Stone; 2016-04-11 to current/open; source msha-controller-operator-history