# Relationship history for MSHA mine 2601871

Current hierarchy: **Comstock Mining Inc → Comstock Mining LLC → Comstock Mining LLC**

- 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

- **controller_controls_mine:** Corrado  De Gasperis → Comstock Mining LLC; 1982-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Alta Exploration Inc → Comstock Mining LLC; 1983-10-01 to 1989-04-02; source msha-controller-operator-history
- **controller_controls_mine:** Moore Irving → Comstock Mining LLC; 1983-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Moore Irving → Alta Exploration Inc; 1983-10-01 to 1989-04-02; source msha-controller-operator-history
- **controller_controls_mine:** Jolcover Scott → Comstock Mining LLC; 1989-04-01 to 1993-03-22; source msha-controller-operator-history
- **operator_operates_mine:** Oliver Hills Mining Company Inc → Comstock Mining LLC; 1989-04-03 to 1993-03-22; source msha-controller-operator-history
- **controller_controls_operator:** Jolcover Scott → Oliver Hills Mining Company Inc; 1989-04-03 to 1993-03-22; source msha-controller-operator-history
- **operator_operates_mine:** South Comstock Joint Venture → Comstock Mining LLC; 1993-03-23 to 2000-07-31; source msha-controller-operator-history
- **controller_controls_mine:** B M R Gold Corp & Rea Gold Corp → Comstock Mining LLC; 1993-03-23 to 2000-07-31; source msha-controller-operator-history
- **controller_controls_operator:** B M R Gold Corp & Rea Gold Corp → South Comstock Joint Venture; 1993-03-23 to 2000-07-31; source msha-controller-operator-history
- **operator_operates_mine:** The Plum Mining Company LLC → Comstock Mining LLC; 2000-08-01 to 2012-03-13; source msha-controller-operator-history
- **controller_controls_mine:** Brockbank W Hughes → Comstock Mining LLC; 2000-08-01 to 2003-10-31; source msha-controller-operator-history
- **controller_controls_operator:** Brockbank W Hughes → The Plum Mining Company LLC; 2000-08-01 to 2003-10-31; source msha-controller-operator-history
- **controller_controls_mine:** Comstock Mining Inc → Comstock Mining LLC; 2003-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Comstock Mining Inc → The Plum Mining Company LLC; 2003-11-01 to 2012-03-13; source msha-controller-operator-history
- **operator_operates_mine:** Comstock Mining Inc → Comstock Mining LLC; 2012-03-14 to 2012-07-29; source msha-controller-operator-history
- **controller_controls_operator:** Corrado  De Gasperis → Comstock Mining Inc; 2012-03-14 to 2012-07-29; source msha-controller-operator-history
- **operator_operates_mine:** Comstock Mining LLC → Comstock Mining LLC; 2012-07-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Comstock Mining Inc → Comstock Mining LLC; 2012-07-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brockbank W Hughes → Comstock Mining LLC; 2012-07-30 to 2003-10-31; source msha-controller-operator-history