New Industries Building, Industrial prison building on Alcatraz Island, San Francisco, US.

The New Industries Building is a two-story, 306-foot-long industrial structure at the western end of Alcatraz Island in San Francisco. Its ground floor held a clothing factory, dry cleaning plant, furniture plant, brush factory and an office, while the entire upper floor was a laundry. Each floor has 17 bays on either side, and every window has nine panes.

The New Industries Building was completed in 1939 at a cost of $186,000, part of a $1.1 million modernization scheme on Alcatraz Island that also added the water tower, power house and officers' quarters and remodeled the D-block. It gave the federal penitentiary a purpose-built industrial workshop and laundry block.

Prisoners worked in the ground-floor clothing factory, dry cleaning plant, furniture plant, brush factory and office, earning wages for items such as gloves, furniture mats and army uniforms. The laundry on the upper floor was the largest in San Francisco at the time.

The building is only accessible as part of a tour of Alcatraz Island, which departs from Pier 33 in San Francisco. It is worth planning the visit well in advance, as tours fill up quickly and availability can be limited.

The upper floor held the largest laundry in San Francisco at the time, occupying the whole storey of the 306-foot building. The ground floor below housed a clothing factory, dry cleaning plant, furniture plant, brush factory and an office, where prisoners made gloves, furniture mats and army uniforms for pay.