# Relationship history for MSHA mine 2902060

Current hierarchy: **William E  Laudenklos → W L Maintenance Company → MATHIS & MATHIS MIN CO MATHIS LI**

- 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:** Goldfield Corp → MATHIS & MATHIS MIN CO MATHIS LI; 1950-01-01 to 2002-12-03; source msha-controller-operator-history
- **controller_controls_mine:** Daniel L  Maxwell → MATHIS & MATHIS MIN CO MATHIS LI; 1990-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** St Cloud Mining Company → MATHIS & MATHIS MIN CO MATHIS LI; 1990-09-01 to 1991-10-31; source msha-controller-operator-history
- **controller_controls_operator:** Goldfield Corp → St Cloud Mining Company; 1990-09-01 to 1991-10-31; source msha-controller-operator-history
- **operator_operates_mine:** Southwest Exploration Inc → MATHIS & MATHIS MIN CO MATHIS LI; 1991-11-01 to 1993-07-06; source msha-controller-operator-history
- **controller_controls_operator:** Daniel L  Maxwell → Southwest Exploration Inc; 1991-11-01 to 1993-07-06; source msha-controller-operator-history
- **operator_operates_mine:** W L Maintenance Company → MATHIS & MATHIS MIN CO MATHIS LI; 1993-07-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** William E  Laudenklos → MATHIS & MATHIS MIN CO MATHIS LI; 1993-07-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William E  Laudenklos → W L Maintenance Company; 1993-07-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Imagin Minerals Incorporated → MATHIS & MATHIS MIN CO MATHIS LI; 2002-12-04 to 2024-12-12; source msha-controller-operator-history
- **controller_controls_operator:** Imagin Minerals Incorporated → St Cloud Mining Company; 2002-12-04 to 1991-10-31; source msha-controller-operator-history
- **controller_controls_mine:** Equalizer Inc → MATHIS & MATHIS MIN CO MATHIS LI; 2024-12-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Equalizer Inc → St Cloud Mining Company; 2024-12-13 to 1991-10-31; source msha-controller-operator-history