# Relationship history for MSHA mine 2401594

Current hierarchy: **Nugent George A-John F Ratchye & Emerson W Scott → Nrs Inc → Chinese Diggings**

- 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:** Jeannie S Mine Company → Chinese Diggings; 1980-11-01 to 1981-07-06; source msha-controller-operator-history
- **controller_controls_mine:** Mt Mining Corp & Art Seiler → Chinese Diggings; 1980-11-01 to 1981-07-06; source msha-controller-operator-history
- **controller_controls_operator:** Mt Mining Corp & Art Seiler → Jeannie S Mine Company; 1980-11-01 to 1981-07-06; source msha-controller-operator-history
- **controller_controls_mine:** Wytana Inc & Missouri Valley Construction Co → Chinese Diggings; 1981-07-01 to 1983-08-22; source msha-controller-operator-history
- **operator_operates_mine:** S & G Mining Company → Chinese Diggings; 1981-07-07 to 1983-05-31; source msha-controller-operator-history
- **controller_controls_operator:** Wytana Inc & Missouri Valley Construction Co → S & G Mining Company; 1981-07-07 to 1983-05-31; source msha-controller-operator-history
- **operator_operates_mine:** Nrs Inc → Chinese Diggings; 1983-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Nugent George A-John F Ratchye & Emerson W Scott → Chinese Diggings; 1983-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Nugent George A-John F Ratchye & Emerson W Scott → Nrs Inc; 1983-06-01 to current/open; source msha-controller-operator-history