# Relationship history for MSHA mine 0503674

Current hierarchy: **John  Nielsen; Sara  Glinatsis → Sunrise Mining, LLC → Mayday - Idaho Mine**

- 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:** Great Guennol Gold Mining Company Ltd → Mayday - Idaho Mine; 1981-04-01 to 1981-08-19; source msha-controller-operator-history
- **controller_controls_mine:** Bernstein Edwin A → Mayday - Idaho Mine; 1981-04-01 to 1981-08-19; source msha-controller-operator-history
- **controller_controls_operator:** Bernstein Edwin A → Great Guennol Gold Mining Company Ltd; 1981-04-01 to 1981-08-19; source msha-controller-operator-history
- **operator_operates_mine:** Great Guennol Gold Mining Company Ltd → Mayday - Idaho Mine; 1981-08-20 to 1982-07-28; source msha-controller-operator-history
- **controller_controls_mine:** Volk Norman → Mayday - Idaho Mine; 1981-08-20 to 1982-07-28; source msha-controller-operator-history
- **controller_controls_operator:** Volk Norman → Great Guennol Gold Mining Company Ltd; 1981-08-20 to 1982-07-28; source msha-controller-operator-history
- **operator_operates_mine:** Ferguson Equipment Company Inc → Mayday - Idaho Mine; 1982-07-29 to 2006-06-19; source msha-controller-operator-history
- **controller_controls_mine:** Ferguson John H → Mayday - Idaho Mine; 1982-07-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ferguson John H → Ferguson Equipment Company Inc; 1982-07-29 to 2006-06-19; source msha-controller-operator-history
- **operator_operates_mine:** Wildcat Mining Corporation → Mayday - Idaho Mine; 2006-06-20 to 2016-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Mike  Clements → Mayday - Idaho Mine; 2006-06-20 to 2012-03-18; source msha-controller-operator-history
- **controller_controls_operator:** Mike  Clements → Wildcat Mining Corporation; 2006-06-20 to 2012-03-18; source msha-controller-operator-history
- **controller_controls_mine:** Varca Ventures, Inc. → Mayday - Idaho Mine; 2012-03-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Varca Ventures, Inc. → Wildcat Mining Corporation; 2012-03-19 to 2016-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Sunrise Mining, LLC → Mayday - Idaho Mine; 2017-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Sara  Glinatsis et al → Mayday - Idaho Mine; 2017-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sara  Glinatsis et al → Sunrise Mining, LLC; 2017-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John  Nielsen et al → Sunrise Mining, LLC; 2017-01-01 to current/open; source msha-controller-operator-history