W. E. and erson & Sons Co. v. Glander

It appears from the record that the appellant is partly engaged in the business of manufacturing and selling concrete. Its activities in this respect are confined to the so-called "transit mix" method, where in the necessary ingredients for producing concrete are placed in a metal mixer at appellants plant. This mixer is mounted on and attached to a motor truck chassis, and the mixing or manufacture of the concrete occurs, by the operation of machinery connected with the mixer, during the time the mixer and its contents are being transported on the motor trek to the location where the concrete is to he delivered and utilized.