A large general contractor in the New York City area, had used a standard Zim-Mixer on several projects through the years. Having experienced the technology and support that Zimmerman offers, they approached us about building a machine to work on a project with underwater concrete placement. The unit had to be configured to mount onto a barge, and with the ability to load the materials. The machine needed to produce several types of product, each with specific mix designs and performance criteria. This custom unit was built and delivered on schedule with training and calibration done on site. Once the machine was set, each material was produced and tested by NYDOT and independent labs, with all specifications being met.