# Relationship history for MSHA mine 2401030

Current hierarchy: **Delaware Ventures & L C Hoffman → Blue Range Mining Company L P → Gilt Edge 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:** Sunshine Mining Company → Gilt Edge Mine; 1950-01-01 to 1984-03-04; source msha-controller-operator-history
- **controller_controls_mine:** Sunshine Mining & Refining Company → Gilt Edge Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sunshine Mining & Refining Company → Sunshine Mining Company; 1950-01-01 to 1984-03-04; source msha-controller-operator-history
- **operator_operates_mine:** Golden Maple Mining & Leaching Inc → Gilt Edge Mine; 1984-03-05 to 1988-12-07; source msha-controller-operator-history
- **controller_controls_mine:** Long Donald C → Gilt Edge Mine; 1984-03-05 to 1988-12-07; source msha-controller-operator-history
- **controller_controls_operator:** Long Donald C → Golden Maple Mining & Leaching Inc; 1984-03-05 to 1988-12-07; source msha-controller-operator-history
- **controller_controls_mine:** Delaware Ventures & L C Hoffman → Gilt Edge Mine; 1986-08-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Blue Range Mining Company L P → Gilt Edge Mine; 1988-12-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Delaware Ventures & L C Hoffman → Blue Range Mining Company L P; 1988-12-08 to current/open; source msha-controller-operator-history