Enterprise Engine and Foundry Co.

Their primary focus was on gold mining machinery, consisting mainly of compression cylinder castings for large engines.

After the notorious 1906 San Francisco earthquake and fire, the Enterprise Engine and Machinery Company played a significant role in the rebuilding of the city.

Their recovery activities provided Martens and his partners additional opportunities to stimulate the growth of and the momentum to expand their business.

The Iron Age in January 1925 estimated 35 foundries to be operating in the San Francisco Bay area, employing 1500 men.

[8] In an effort to diversify the range of products, the company began selling oil burners and food processing equipments.

During World War II, Enterprise built hundreds of diesel engines for the United States Navy and Maritime Commission for tugs, harbor craft, small vessels, and auxiliary electric generators on larger ships.

In addition, many Enterprise engines were sold to drive electric power generators in cities and towns across America.

This gave rise to a substantial increase of the company's engineering and production capacity and its testing and research capability.

These are now being utilized in almost every conceivable type of prime-mover application from powering boats and pumping oil to generate electricity.