# Relationship history for MSHA mine 2101663

Current hierarchy: **Hammond T Becken; Tim L Becken → Owatonna Concrete Products LLC → Clarks Grove Pit**

- 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:** Peterson Excavating Of Clarks Grove Inc → Clarks Grove Pit; 1950-01-01 to 1999-02-25; source msha-controller-operator-history
- **controller_controls_mine:** David L Peterson → Clarks Grove Pit; 1950-01-01 to 1999-02-25; source msha-controller-operator-history
- **controller_controls_operator:** David L Peterson → Peterson Excavating Of Clarks Grove Inc; 1950-01-01 to 1999-02-25; source msha-controller-operator-history
- **operator_operates_mine:** Clarks Grove Ready Mix LLC → Clarks Grove Pit; 1999-02-26 to 2006-04-30; source msha-controller-operator-history
- **controller_controls_mine:** Alan Gerald  Brunsvold → Clarks Grove Pit; 1999-02-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alan Gerald  Brunsvold → Clarks Grove Ready Mix LLC; 1999-02-26 to 2006-04-30; source msha-controller-operator-history
- **operator_operates_mine:** Randall Ready Mix LLC → Clarks Grove Pit; 2006-05-01 to 2007-10-31; source msha-controller-operator-history
- **controller_controls_mine:** Falkstone LLC → Clarks Grove Pit; 2006-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Falkstone LLC → Randall Ready Mix LLC; 2006-06-01 to 2007-10-31; source msha-controller-operator-history
- **operator_operates_mine:** Owatonna Concrete Products LLC → Clarks Grove Pit; 2007-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Tim L Becken et al → Clarks Grove Pit; 2007-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tim L Becken et al → Owatonna Concrete Products LLC; 2007-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hammond T Becken et al → Owatonna Concrete Products LLC; 2007-11-01 to current/open; source msha-controller-operator-history