I am delighted to open this symposium on underground waste management. It would be difficult at this juncture to count the number of projects undertaken cooperatively by the AAPG and the USGS, for they have been numerous, indeed, and have taken place over several decades. Whatever the number, both organizations can take pride in the way in which they have joined their efforts to advance geologic knowledge in the service of the nation. Speaking for the Geological Survey, I am eager to see this cooperation continue and expand, and I intend to offer some suggestions for additional cooperative projects. Now, however, I want both to commend and thank those in both organizations who were responsible for arranging this fine symposium on such a timely and important topic.