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jhaaja · 7th March 2008, 11:48

Quote: (Originally Posted by Mdemon)

Is the water fresh? And do you get much silt in there? It looks so clear!

Water is fresh and the viz is usually really good. The open water (now under ice) has usually 10-15m horizontal viz. In mining tunnels it varies from typical 10-15m to 3m and +30m...

There is some silt on the floors in most places and also some in the roof. Most roofs are clean after good beating of exhaled gas. RBs are good in that sense that when you visit new places you don´t get the silt of the roofs.

JH

7th March 2008, 11:48	#17 (permalink)
jhaaja Custom Title Allowed! Current Rebreather/s: Inspiration Classic Other Rebreather/s: Join Date: Mar 2005 Location: Finland Posts: 885	Re: Winter mine diving can be strenuous :) Quote: (Originally Posted by Mdemon) Is the water fresh? And do you get much silt in there? It looks so clear! Water is fresh and the viz is usually really good. The open water (now under ice) has usually 10-15m horizontal viz. In mining tunnels it varies from typical 10-15m to 3m and +30m... There is some silt on the floors in most places and also some in the roof. Most roofs are clean after good beating of exhaled gas. RBs are good in that sense that when you visit new places you don´t get the silt of the roofs. JH
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