# Relationship history for MSHA mine 2302322

Current hierarchy: **William  Gaines → Midwest Stone LLC → Burfordville Stone**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Midwest Stone LLC → Burfordville Stone; 2005-11-03 to 2007-02-27; source msha-controller-operator-history
- **controller_controls_mine:** Gary  Dittmer → Burfordville Stone; 2005-11-03 to 2008-02-25; source msha-controller-operator-history
- **controller_controls_operator:** Gary  Dittmer → Midwest Stone LLC; 2005-11-03 to 2007-02-27; source msha-controller-operator-history
- **operator_operates_mine:** Burfordville Materials Inc → Burfordville Stone; 2007-02-28 to 2008-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Wayne  Schremp → Burfordville Stone; 2007-02-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wayne  Schremp → Burfordville Materials Inc; 2007-02-28 to 2008-12-31; source msha-controller-operator-history
- **controller_controls_mine:** William  Gaines → Burfordville Stone; 2008-02-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William  Gaines → Midwest Stone LLC; 2008-02-26 to 2007-02-27; source msha-controller-operator-history
- **operator_operates_mine:** Midwest Stone LLC → Burfordville Stone; 2009-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William  Gaines → Midwest Stone LLC; 2009-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gary  Dittmer → Midwest Stone LLC; 2009-01-01 to 2008-02-25; source msha-controller-operator-history