# Relationship history for MSHA mine 1302341

Current hierarchy: **James  Frank; Monica  Becker; Patrick  Nepereny → Stratford Gravel, Inc. → Stratford Shop**

- 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:** Bauerly Brothers Inc → Stratford Shop; 1950-01-01 to 2001-04-25; source msha-controller-operator-history
- **controller_controls_mine:** Jeff C Roverud et al → Stratford Shop; 1950-01-01 to 2004-02-04; source msha-controller-operator-history
- **controller_controls_mine:** MDU Resources Group Inc → Stratford Shop; 2001-04-26 to 2023-05-31; source msha-controller-operator-history
- **controller_controls_mine:** MDU Resources Group Inc → Stratford Shop; 2004-02-05 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Knife River Midwest LLC → Stratford Shop; 2007-04-02 to 2012-02-06; source msha-controller-operator-history
- **controller_controls_operator:** Jeff C Roverud et al → Knife River Midwest LLC; 2007-04-02 to 2004-02-04; source msha-controller-operator-history
- **controller_controls_operator:** Curtis G Roverud et al → Knife River Midwest LLC; 2007-04-02 to 2004-02-04; source msha-controller-operator-history
- **controller_controls_operator:** MDU Resources Group Inc → Knife River Midwest LLC; 2007-04-02 to 2012-02-06; source msha-controller-operator-history
- **controller_controls_mine:** Charles P  Becker → Stratford Shop; 2011-03-15 to 2016-02-04; source msha-controller-operator-history
- **operator_operates_mine:** Knife River North Central → Stratford Shop; 2012-02-07 to 2012-11-28; source msha-controller-operator-history
- **controller_controls_operator:** Bauerly Brothers Inc → Knife River North Central; 2012-02-07 to 2001-04-25; source msha-controller-operator-history
- **controller_controls_operator:** MDU Resources Group Inc → Knife River North Central; 2012-02-07 to 2012-11-28; source msha-controller-operator-history
- **operator_operates_mine:** Stratford Gravel, Inc. → Stratford Shop; 2012-11-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Charles P  Becker → Stratford Gravel, Inc.; 2012-11-29 to 2016-02-04; source msha-controller-operator-history
- **controller_controls_mine:** James  Frank et al → Stratford Shop; 2016-02-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James  Frank et al → Stratford Gravel, Inc.; 2016-02-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Patrick  Nepereny et al → Stratford Gravel, Inc.; 2016-02-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Monica  Becker et al → Stratford Gravel, Inc.; 2016-02-05 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Knife River Corporation → Stratford Shop; 2023-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Knife River Corporation → Knife River North Central; 2023-06-01 to 2012-11-28; source msha-controller-operator-history