Why do human beings still risk their lives under ground and doing one of the dirtiest and most dangerous jobs in the world? It's an increasingly urgent question, given the recent mining accidents in Sago. W. Va. and Huntington, Utah. A small group of engineers and robotics experts look forward to a day in the not-too-distant future when robots and other technology do most of the dangerous mining work. Robotic technology, in particular, holds much promise, McAteer says, especially when it comes to mapping mines and rescuing trapped miners--the special operations of the mining industry. One of the first mining robots was developed five years ago at Canegie-Mellon University's Robotics Institute. It was called Groundhog. It used lasers to "see" in dark tunnels and map abandoned mines - some of the most dangerous work in the business The latest design is called Cave Crawler. It's a bit smaller than Grondhog, and even more advanced. It can take photos and video and has more sensors that can discover the presence of dangerous gases. The robot has a real sense of logic, which is hard to believe. If it comes across a thing in the way it gets confused. It has to think through the process and where to go next, and sometimes it _ just like a real person. The greatest problem, though, is cost. The money of the earliest research project was provided by the government, but that money has dried up, and it's not clear where future money will come from. Partly for that reason, and partly because of advances in safely, mining is not nearly as dangerous as it was in the past. Since 1990,fatalities  have declined by 67 percent and injuries by 51 percent, according to the National Mining Association. Some experts predict that robots in the mines will serve much of the same function that they do in the automotive industry. The robot do the most boring and dangerous jobs, but don't eliminate the need for human workers. We can learn from the text that   _  .
a mining robots can help miners have an operation Groundhog can discover the presence of dangerous gases experts are trying to make robots help miners with dangerous work robots have helped improve the safety of mining