  The DHCAL, the Digital Hadron Calorimeter, is a prototype calorimeter based
on Resistive Plate Chambers (RPCs). The design emphasizes the imaging
capabilities of the detector in an effort to optimize the calorimeter for the
application of Particle Flow Algorithms (PFAs) to the reconstruction of
hadronic jet energies in a colliding beam environment. The readout of the
chambers is segmented into 1 x 1 cm2 pads, each read out with a 1-bit (single
threshold) resolution. The prototype with approximately 500,000 readout
channels underwent extensive testing in both the Fermilab and CERN test beams.
This talk presents preliminary findings from the analysis of data collected at
the test beams.
