# Relationship history for MSHA mine 3400282

Current hierarchy: **United States Lime & Minerals Inc → U.S. Lime Company-St. Clair → U.S. Lime Company-St. Clair**

- 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:** St Clair Lime Company → U.S. Lime Company-St. Clair; 1950-01-01 to 1995-11-30; source msha-controller-operator-history
- **controller_controls_mine:** Stephen F  Dunlap → U.S. Lime Company-St. Clair; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stephen F  Dunlap → St Clair Lime Company; 1950-01-01 to 1995-11-30; source msha-controller-operator-history
- **operator_operates_mine:** Global Stone St Clair Inc → U.S. Lime Company-St. Clair; 1995-12-01 to 1997-12-01; source msha-controller-operator-history
- **controller_controls_mine:** Global Stone Corp → U.S. Lime Company-St. Clair; 1995-12-01 to 1997-12-01; source msha-controller-operator-history
- **controller_controls_operator:** Global Stone Corp → Global Stone St Clair Inc; 1995-12-01 to 1997-12-01; source msha-controller-operator-history
- **operator_operates_mine:** U.S. Lime Company-St. Clair → U.S. Lime Company-St. Clair; 1997-12-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Oglebay Norton Company → U.S. Lime Company-St. Clair; 1997-12-02 to 2005-12-28; source msha-controller-operator-history
- **controller_controls_operator:** Oglebay Norton Company → U.S. Lime Company-St. Clair; 1997-12-02 to 2005-12-28; source msha-controller-operator-history
- **controller_controls_mine:** United States Lime & Minerals Inc → U.S. Lime Company-St. Clair; 2005-12-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** United States Lime & Minerals Inc → U.S. Lime Company-St. Clair; 2005-12-29 to current/open; source msha-controller-operator-history