Nuclear Testing without Testing SINCE THE FIRST NUCLEAR TEST EXPLOSION IN 1945, MORE THAN TWO THOUSAND TEST BOMBS HAVE BEEN DETONATED AROUND THE WORLD. SINCE THESE SEND RADIOACTIVITY INTO THE ENVIRONMENT, A NEW INTERNATIONAL TREATY--THE COMPREHENSIVE TEST BAN TREATY--HAS BEEN PROPOSED TO BAN ALL SUCH TESTING. THE US CONGRESS IS CURRENTLY CONSIDERING WHETHER TO RATIFY THE TREATY AND ONE IMPORTANT QUESTIONS IS HOW WILL THE GOVERNMENT KNOW THEIR WEAPONS WORK IF THEY CAN'T TEST THEM? THE DEPARTMENT OF DEFENSE'S SANDIA NATIONAL LABS IS ONE OF THE PLACES STEPPING IN TO DEVISE NEW WAYS OF INSPECTING NUCLEAR ARMS. Cook: "Without underground testing, we must be able to make sure that nuclear weapons are safe, reliable, and effective. Without such testing, we'll do that through a compniation of computer calculations and experiments." PHYSICIST DON COOK IS ONE OF THE SCIENTISTS IN CHARGE OF THOSE EXPERIMENTS FOR SANDIA. HE SAYS THE ATOM-SMASHERS PHYSICISTS USE TO STUDY TEENSY PARTICLES CAN ALSO BE USED TO STUDY NUCLEAR REACTIONS. THESE PARTICLE ACCELERATORS CAN SEND PARTICLES ZOOMING SO FAST THEY COULD FLY FROM NEW YORK TO LOS ANGELES IN A SINGLE SECOND. Cook: "Matter can be very rapidly accelerated and then stopped on itself. . . a lot like brakes stop an automobile and make the brake linings hot. If we can accelerate matter very rapidly and then stop it in a very short time, we make very high temperatures. . .that heat simulates what happens in a nuclear weapon." EXPERIMENTS UNDER THESE INTENSE HEAT CONDITIONS COMBINED WITH ELABORATE COMPUTER MODELS OF NUCLEAR EXPLOSIONS WOULD ELIMINATE THE NEED FOR ACTUAL TEST DETONATIONS, SAYS VICTOR REISS AT THE DEPARTMENT OF ENERGY. Reiss: "If we can do it right, we can maintain our stockpile indefinitely and we can do it without testing."