24 « The Containment of Underground Nuclear Explosions oeTara Dy. MSPa Photo creat Oetenss Nuciear Agency End of Tunnel comments in its recommendation letter to the President. The Nevada Operations Office plans the inventory to see if a suitable hole is available or if a new one must be drilled. individual tests with the responsible laboratory. Once a hole is selected, the sponsoring laboratory designs a plan to fill-in (or ‘*stem’’) the hole to Both Livermore and Los Alamos maintain stock- piles of holes in various areas ofthe test site.2! When a specific test is proposed, the lab will check its contain the radioactive material produced by the explosion. The USGS and Earth scientists from several organizations analyze the geology surround- 2IEach laboratory operates its own drilling crews conunuously to maximize the economy ofthe drilling operation.