There is no doubt that we're going from diesel to electric. Diesel particulate matter is a known carcinogen, and we have to move from diesel underground to all electric. There are a number of companies that are already starting to supply different types of scooptrams and a variety of different vehicles.
Tesla, if you give them a little poke, will probably solve a lot of problems for the type of electric-powered equipment, but we have a transition issue. We have thousands of pieces of equipment that cost a fortune. One scooptram underground costs you a million bucks, so you're not going to just discard that, especially when the mining industry is in tough shape right now because of the commodity prices. You have to develop a transition plan.
Eventually, new mines will probably go all electric, but in the meantime we have to get to cleaner diesel filters and that sort of thing. We have to come up with a practical transition plan.