would frozen ground cave and undermine as seen in those pictures? and if so, those chunks would do a LOT of damage to anyone in the hole. it might not hurt osha, but very well could hurt the people subjected to that hazard.
i appreciate your concern ,,but we dont put ourselfs in that situation,,take a good look at what your discribing,,noy that i havr to justify myself to you but in different parts of north america,call for differnt means of work,,if the ground was any more solid we'd need a hammer second of all this is a freak white out which im sure you know all about and third of all if you come up here or anywere in canada for that matter they will tell you its they way things go ,,,,if your not happy with these pictures then dont look at them !!!
there put here for people to enjoy not write a complaint columm,,ive seen alot worse then this,,