Jennerjohn & Holthaus

Jennerjohn & Holthaus

Jennerjohn and Holthaus, Inc. is a blast hole drilling contracting company that was acquired in 2005 from Ron and Willard Holthaus. The company is located in Decorah, Iowa and been in existence since the 1960's. They have done work in Iowa, Minnesota, Wisconsin, Wyoming, Missouri, and Illinois. Operations are managed by Lee Fischer.