The sustaining power of ice at various degrees of thickness is given
in the following paragraphs:
At a thickness of two inches, will support a man.
At a thickness of four inches, will support man on horseback.
At a thickness of six inches, will support teams with moderate loads.
At a thickness of eight inches, will support heavy loads.
At a thickness of ten inches, will support 1,000 pounds to the square
foot.