"The larger asset base will ease financial processes and allow us to compete for new markets," Batey said.
St. Lawrence Cement's other subsidiaries, all Canadian corporations which have gone by different names in the past, are undergoing the same name change, he said.
Having one name supports an objective to work as one company, Batey said.
St. Lawrence Cement employs more than 2,500 people and has annual sales of more than $700 million.
Its subsidiaries manufacture portland cement, ready-mix concrete and other construction materials, Batey said.
The local plant makes portland cement, the powder used to make concrete, he said.
It produces more than 500,000 tons and exceeds $16 million in operating expenses annually.
Besides having a different name on their paychecks, employees won't be affected by the company's name change, Batey said.
"We will continue St. Lawrence Cement's commitment to protect the health and safety of employees and neighbors and to operate in an environmentally responsible manner," he said.
The basis of the Hagerstown plant is a limestone quarry that began operations in 1903.
In 1908, Charles Catlett started a one-kiln plant, known as Maryland Portland Cement Co., to serve the Baltimore and Washington, D.C., markets.
In 1909, the company merged with the Berkeley Limestone Co. and became Security Cement and Lime.
Other owners have included North American Cement, Marquette Cement, Gulf & Western and Lone Star Industries.