CompuServe Messages

Heat Problems in Mines

    27-Nov-94 21:04:16
Fm: CHRIS TREDWELL 73321,2167
To: Doug Mitchell 70621,702
Hi, Doug >>smell anything unusual thereabouts? No, no smells, fatal or otherwise; confirmed by mine manager, who was with me. >>Did you feel the rocks.. Yes, feelies all along the tunnel. In general the rock was very roughly about 10 deg. less than the air temperature; however, I was unable to identify "zoning" of the temperature. In other words, the rocks seemed to get steadily warmer in a consistent manner, without abrupt changes, unlike the air. >>Can you tell if these temperature zones move about with time? The truth is that it was so hot that we got out as fast as possible.The mine manager, who has to visit this area frequently, says that he has not noticed movement of the temperature zones, but also that he is mainly interested in doing his job as quickly as possible and getting to cooler areas. One side of thee tunnel is the lode's hanging wall and the other is mainly vein stockwork with a lot of quartz vugs. All the walls/roof are flaking off constantly, like cornflakes, presumably because of the pressure. The miners, who have to push this tunnel to a new reserve, normally strip off, cover their bodies with mud and work 20 – 30 mins before taking a break in a cooler area. Doug – a non-geo question: I use DOSCIM with OS/2. All works perfectly, with the exception of "Search Membership": the results of the search are always shown as garbage (ascii characters) and are therefore illegible. Any ideas, please, please? Chris