# Soviet ES-4001 mainframe control panel rescued from Chernobyl zone restored

> **Key takeaway:** The Chornobyl Family has restored a 1970s-era ES-4001 control panel from the Soviet ES EVM mainframe series, originally installed at the Duga-1 radar site near the Chernobyl nuclear plant.

**Published:** 2026-10-23T05:00:00+00:00 
**Source:** Hackaday Hardware 
**Category:** open-hardware 
**Canonical URL:** https://fosswire.org/news/soviet-es-4001-mainframe-control-panel-rescued-from-chernoby.html 

## Summary
The Chornobyl Family has acquired and restored an ES-4001 control panel from a 1970s Soviet mainframe, one of roughly 300 units produced. The panel came from an ES-1060 installed at the Duga-1 early warning radar system near the Chernobyl nuclear power plant, which was never put into service after the 1986 Unit-4 accident. A second panel from the early 1980s, with a gentler datacenter service history, provided the working base for the restoration project. The group documented the panel's unique design differences from the IBM System/370 it was derived from, and its operational mechanics.

## What the ES-4001 panel reveals about Soviet computing
- The ES EVM series was the USSR's response to IBM's System/360 and System/370, effectively cloning rather than purely original design
- The ES-1060 at Duga-1 was part of the over-the-horizon radar's computer center, located beneath the famous antenna arrays
- The control panel differs substantially from its IBM counterparts despite the architectural lineage
- Only about 300 ES-series mainframes were manufactured, making surviving hardware and documentation exceptionally rare
- The restored panel required repair of damage from its violent removal from the original mainframe chassis

## Why it matters
Preservation projects like this document hardware that exists in vanishingly small quantities, providing reference material for retrocomputing researchers and historians of Cold War technology.