H
Huw Groucutt
Guest
so...suppose you have a deep dig, guess its about 12metres now, vertical at first then under a lip then riftyish, then at the bottom starting to go off horizontally. Total clay fill, absoloutly no air flow. The air is ok for the first person digging but after that very hot and panting, sometimes headaches aswell, - seem like classic CO2 symptoms.
So, how can we aerate the dig? Propsosals range from the optimistic 'bellows and a bit of pipe' up to petrol generators. Considering the vertical difference and the amount of carbon dioxide and dust which needs to be taken out (sucked out? or air blown in?). The dig is only about 30 metres from a strong draft so fumes from a genny shouldnt be a problem.!
Any suggestions welcome
So, how can we aerate the dig? Propsosals range from the optimistic 'bellows and a bit of pipe' up to petrol generators. Considering the vertical difference and the amount of carbon dioxide and dust which needs to be taken out (sucked out? or air blown in?). The dig is only about 30 metres from a strong draft so fumes from a genny shouldnt be a problem.!
Any suggestions welcome