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Recovery of the glass fragments was important to Jet Propulsion Laboratory, to provide data for designing thermal switches for the Mercury-Venus Mariners to be flown in 1973. However, recovery of the splinters could easily cause cuts and leaks in the astronauts' gloves; extreme caution would be required. The following procedures were recommended: use of a line during the initial solo descent into the Surveyor III crater, to determine the footing and climbing situation before both crewmen descended into the crater, and recovery of thermal-switch glass fragments by a suitable tool such as tweezers, to prevent glove damage.