Question

why are ice blocks wrapped in saw dust or woollen blanket

Answer 1

to prevent the latent heat of fusion and allow them to remain in solid form

Answer 2

to provide stregth to the block of ice as
saw dust absorbs water and hardens when freezed.
if you hammer the freezed with saw dust it will not broak easily as normal ice.
it also lets the ice to melt very-very slowly as compared to normal right.
it does ot allow much heat to melt ice.

tell me if the answer is wrong or right.