Profile: Cox & Sons, Inc., James design and manufacture the prototype for the shear testing system for the federal Strategic Highway Research Program (SHRP). Our product line includes CS 100 sieve shaker, CS 325 rolling thin film oven (RTFO), CS 600 moisture exudation indicator, CS 1000 hydraulic kneading compactor, and CS 4140 axial testing system. The CS 100 Sieve Shaker includes a feature that provides a vertical rapping action along with the horizontal motion. This provides for more efficient sieve shaking. When durability testing is desired, the vertical action is locked by means of a hand knob. Our moisture exudation indicator unit is required for the R-Value method of determining the pressure at which water is exuded from compacted soil specimens. The unit includes two pressure plate versions. The standard indicator requires the operator to continuously check around the bottom circumference of the mold for free water exuding from under the mold to the outside. The more recent version features a bronze ring around the outside edge of the mold. An indicator light is turned on when the presence of free water is detected. This unit is very useful in automating the test, or when the testing machine design inhibits visual observation of the back side of the mold.