# Relationship history for MSHA mine 2602167

Current hierarchy: **Samuel  Sternheim; Seth  Stern → Quartz Lake Mining Inc → February Premier**

- 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:** Geochem Mines Inc → February Premier; 1990-10-01 to 1999-11-10; source msha-controller-operator-history
- **controller_controls_mine:** James H  Henderson → February Premier; 1990-10-01 to 1999-11-10; source msha-controller-operator-history
- **controller_controls_operator:** James H  Henderson → Geochem Mines Inc; 1990-10-01 to 1999-11-10; source msha-controller-operator-history
- **operator_operates_mine:** Lode Star Gold Inc → February Premier; 1999-11-11 to 2022-01-23; source msha-controller-operator-history
- **controller_controls_mine:** Lonnie S  Humphries → February Premier; 1999-11-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lonnie S  Humphries → Lode Star Gold Inc; 1999-11-11 to 2022-01-23; source msha-controller-operator-history
- **operator_operates_mine:** Quartz Lake Mining Inc → February Premier; 2022-01-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Samuel  Sternheim et al → February Premier; 2022-01-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Samuel  Sternheim et al → Quartz Lake Mining Inc; 2022-01-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Seth  Stern et al → Quartz Lake Mining Inc; 2022-01-24 to current/open; source msha-controller-operator-history