# Relationship history for MSHA mine 4104156

Current hierarchy: **Karl  Weidner → ROX, Inc. → ROX, Inc.**

- 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:** Dean  Fischer → ROX, Inc.; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Keith Weidner Construction → ROX, Inc.; 2000-04-01 to 2010-06-21; source msha-controller-operator-history
- **controller_controls_mine:** Keith  Weidner → ROX, Inc.; 2000-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Keith  Weidner → Keith Weidner Construction; 2000-04-01 to 2010-06-21; source msha-controller-operator-history
- **operator_operates_mine:** KC Materials → ROX, Inc.; 2010-06-22 to 2014-06-01; source msha-controller-operator-history
- **controller_controls_mine:** Keith  Weidner → ROX, Inc.; 2010-06-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Keith  Weidner → KC Materials; 2010-06-22 to 2014-06-01; source msha-controller-operator-history
- **operator_operates_mine:** Brauntex Materials, Inc. → ROX, Inc.; 2014-06-02 to 2024-12-29; source msha-controller-operator-history
- **controller_controls_operator:** Dean  Fischer → Brauntex Materials, Inc.; 2014-06-02 to 2024-12-29; source msha-controller-operator-history
- **operator_operates_mine:** ROX, Inc. → ROX, Inc.; 2024-12-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Karl  Weidner → ROX, Inc.; 2024-12-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Karl  Weidner → ROX, Inc.; 2024-12-30 to current/open; source msha-controller-operator-history