After the drilling is deemed complete and the drilling equipment is taken out from the hole, the work at the site is not over. Next, comes the logging, which is the part of the operation where instrumentation is lowered to measure a number of characteristics surrounding the newly drilled hole. The instruments are called "logging tools", these tools are developed by a company called Schlumberger. In this photo, Schlumberger logging engineer, Kerry Swain, is briefing  the drilling deck crew on safety and the deployment plan prior to preparing the tools for deployment. Logging is an important part of the operations, and gives perspective to the samples being analyzed on board, the information can tell the scientists the horizontal extent representative of the samples they’ve extracted, which is important to know.