# Relationship history for MSHA mine 2103684

Current hierarchy: **Craig  Bjorklund → Bjorklund Companies LLC → Miller**

- 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:** Craig Bjorklund Trucking → Miller; 2009-08-12 to 2013-02-18; source msha-controller-operator-history
- **controller_controls_mine:** Craig S.  Bjorklund et al → Miller; 2009-08-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Craig S.  Bjorklund et al → Craig Bjorklund Trucking; 2009-08-12 to 2013-02-18; source msha-controller-operator-history
- **controller_controls_operator:** Dianne  Bjorklund et al → Craig Bjorklund Trucking; 2009-08-12 to 2013-02-18; source msha-controller-operator-history
- **operator_operates_mine:** Bjorklund Companies LLC → Miller; 2013-02-19 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Craig  Bjorklund → Miller; 2013-02-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Craig  Bjorklund → Bjorklund Companies LLC; 2013-02-19 to current/open; source msha-controller-operator-history