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Diving lantern.
UMG26A02_431

Diving lantern.

Riveting machine by D. and J. Tannahill.
UMG26A02_449

Riveting machine by D. and J. Tannahill.

Apparatus for cleaning knives.
UMG26A02_430

Apparatus for cleaning knives.

Wilson's machine for pressing metal into molds.
UMG26A02_450

Wilson's machine for pressing metal into molds.

Newly-built small blast furnaces at yingshuichiao iron smelting works in chungwei county, china, great leap forward, 1950s.
UMG20B00_393

Newly-built small blast furnaces at yingshuichiao ...

Small blast furnaces in hunan province, china, great leap forward, 1950s.
UMG20A99_337

Small blast furnaces in hunan province, china, gre...

Great leap forward, the kuhsien steel mill in changchi city added about 220 small local-type furnaces in seven days, increasing the daily steel output from a meager 90 tons to 2,150 tons - surpassing ...
UMG20B00_492

Great leap forward, the kuhsien steel mill in chan...