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Men entering Sweeney Hall, 1953

Men are entering and exiting the Chemical Engineering Building which was renamed Sweeney Hall in 1964.

Men are entering and exiting the Chemical Engineering Building which was renamed Sweeney Hall in 1964.

A group of students are standing at the entrance to the Big Five Tunnel, Idaho Springs, Colorado. Some of the men are holding mining tools.

A group of students are standing at the entrance to the Big Five Tunnel, Idaho Springs, Colorado. Some of the men are holding mining tools.

Five mining engineering students are standing with surveying equipment inside a gypsum mine.

Five mining engineering students are standing with surveying equipment inside a gypsum mine.

$Operation of the pilot plant fractional distillation column, 1951?$

Four researchers are participating in the operation of the pilot plant fractional distillation column.

$Operation of the pilot plant fractional distillation column, 1951?$

Four researchers are participating in the operation of the pilot plant fractional distillation column.

This view shows various pieces of equipment in the Paper Laboratory.

This view shows various pieces of equipment in the Paper Laboratory.

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