Vintage 3-11 Alarm fire in Chicago, 4-12-71

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A fire alarm was reported on March 11, 1971, at 934 Cuyler in Chicago. The exact time of the incident was 9:34 a.m., and the photographer remains unidentified.

These images provide a glimpse into a historical event that took place over five decades ago. While the identities of the photographers remain unknown, the photos capture a moment in time that is now preserved for future generations to see and remember. Whether it’s the smoke rising from the building or the emergency vehicles responding to the call, each photo tells a story of its own.

Ferro Tungsten

Ferro-tungsten iron alloy series (tungsten content: 70%-80%) is an alloy composed of tungsten and iron, which is used as an alloy additive for steelmaking. Commonly used ferrotungsten contains 70% tungsten and 80% tungsten.
Ferrotungsten is prepared from wolframite by carbon reduction in an electric furnace. Mainly used as alloying element additive for tungsten-containing alloy steel (such as high-speed steel). There are three varieties of ferrotungsten produced in my country, including W701, W702, and W65, and the tungsten content is about 65-70%. Due to its high melting point, it cannot flow out in a liquid state, so it is produced by agglomeration method or iron extraction method.

Ferro Tungsten,Iron Alloy Ferrotungsten,Metal Ferrotungsten,High-Purity Alloy Ferrotungsten

Jiangsu Lucky Metal Materials Co., Ltd. , https://www.luckymetalmoly.com