River City Stone Equipment Operator in Dubuque, Iowa


River City Stone, a division of Mathy Construction Company, has been in the aggregate industry since the early 1960’s.

River City Stone produces top quality aggregates using the latest technologies to meet the needs of our customers in Iowa, Illinois and Wisconsin. As a long-standing leader in our industry, we supply the materials used in building, maintaining and beautifying the infrastructure of our communities, businesses, farms and homes.

Our full lines of stone, sand, and gravel products have been developed to meet federal, state and local specifications and the engineering and aesthetic criteria for civil engineers, landscape architects and homeowners.


This is a skilled position requiring operator to load material / aggregate/ soils into transport vehicles or crushing and screening plants or hot mix asphalt plants. Loads will be properly weighed and free from debris that can fall from the trailers or beds of the transports. Operator will distribute materials evenly throughout transport. Operators filling crushers and screen plants or hot mix asphalt plants are responsible for materials of proper classification to be fed continually.


  • Must be at least 18 years old

  • Reliable transportation

  • Ability to operate equipment safely and efficiently

  • Ability to keep time and material records

  • Ability to follow verbal and written instruction

  • Knowledge of aggregate sizes and classifications

  • Knowledge of weight requirements of loads leaving the pit.

  • Knowledge of soils, sand and aggregate classification to help produce “spec” material through the crushing operation

  • Excellent customer relation skills.


Benefit package is offered through the Union.