# Relationship history for MSHA mine 0201874

Current hierarchy: **Sanstead Harlow E → Triple S Mining Company → Goldfield 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Clark-Oliver Mining Company Inc → Goldfield Mine; 1950-01-01 to 1980-06-24; source msha-controller-operator-history
- **controller_controls_mine:** Clark Frank H → Goldfield Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Clark Frank H → Clark-Oliver Mining Company Inc; 1950-01-01 to 1980-06-24; source msha-controller-operator-history
- **operator_operates_mine:** Advance Mineral Company → Goldfield Mine; 1980-06-25 to 1981-12-14; source msha-controller-operator-history
- **controller_controls_mine:** Sanstead Harlow E Et Al → Goldfield Mine; 1980-06-25 to 1981-12-14; source msha-controller-operator-history
- **controller_controls_operator:** Sanstead Harlow E Et Al → Advance Mineral Company; 1980-06-25 to 1981-12-14; source msha-controller-operator-history
- **controller_controls_mine:** Richard  Neslund → Goldfield Mine; 1981-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Sunchief Mines → Goldfield Mine; 1981-12-15 to 1982-02-16; source msha-controller-operator-history
- **controller_controls_operator:** Richard  Neslund → Sunchief Mines; 1981-12-15 to 1982-02-16; source msha-controller-operator-history
- **operator_operates_mine:** Triple S Mining Company → Goldfield Mine; 1982-02-17 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Sanstead Harlow E Et Al → Goldfield Mine; 1982-02-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sanstead Harlow E Et Al → Triple S Mining Company; 1982-02-17 to current/open; source msha-controller-operator-history