somewhere, i want to say one thing, what technology has come to, that's for sure, the quarry in mikoshevichithe only place in europe where stone is mined using blasting. the drilling rig specially prepares the soil for blasting operations. the drilling rig is probably the most important stage. i understand that this is the hole that the drill drills, right, for laying explosives, not a hole, a borehole, a borehole, in technical language it is, i apologize, and how deep, it all depends on the height of the pit, well, that's yours professional opinion, your professional view, here how much is 15-17 m, 15-17 m, absolutely right. water is already coming, yes, water is already coming, groundwater, it is already filling it, yes, absolutely right, how long does such a borer burn, it varies, from twenty, well maybe even up to an hour, it all depends on the strength of the rock, from 20 minutes for 20 minutes, well, let's say, up to an hour, well, that's fast, what boys don't like remote -controlled cars, well, we always love it when it's small and drives really fast, here the speeds are not that hig