With the establishment of the Mason City and Fort Dodge Railroad line in 1866, Mason City began to quicky grow as a
significant retail and manufacturing center of the Midwest.The Brick and Tile Company, the first of Mason City's
industries, was established in 1866, utilitizing abundant natural deposits of limestone and clay in the area. At one time there were nine
brick and tile companies in Mason City which lured many immigrants from the southern and eastern locales of Europe who
were seeking employment in America. "Lehigh Row" was established to house immigrant workers on the grounds of the cement
company. Northwestern's row houses for their employees was named "White Clay."
The Northwestern State Portland Cement Plant was founded in 1906, followed by
the Lehigh Portland Cement Company in 1910. The Colby Car manufacturing operation opened in 1911. By 1912, Mason City
was shipping the largest freight tonnage in the State of Iowa and producing more brick and tile and more Portland cement
than any city in the world.
Weaver Construction Company, headquartered in Iowa Falls, Iowa, was mainly a road construction company. Among their
state-wide quarries was one located approximately 3 miles north of Mason City. They supplied Mason City Ready Mix
Company to make bulk cement.
Lehigh Portland Cement Company shipped 1,561 carloads in 1956. The company produced
3,000,000 barrels of cement in 1957.
In 1955, Northwestern States Portland Cement Company shipped 2,216 carloads.
Andrews Concrete Products was established in 1947. They brought in bulk cement from the local plands and made 'ready mix'
which was specialized in pre-cast conrete products, such as blocks and steps. Andrews was the only local plant that
produced Prestess concrete beams and joists.
Although competition was stiff, the quality of the products shipped out of Mason City assured each company a good business.