The range of 60-70 decibels sound pressure level is about as loud as normal conversation in 1 meter distance.
Flammable, Radioactive Sinkholes. Lesser known in the mainstream media, however, is frackingâs link to massive sinkholes appearing overnight and leaking radiation across the nation.
A Sinkhole is an area of ground that has no natural external surface drainage--when it rains, all of the water stays inside the sinkhole and typically drains into the sub-surface aquifers. Sinkholes can vary from a few feet to hundreds of acres and from less than (1) foot to more than (100) feet deep. Some are shaped like shallow bowls or saucers whereas others have vertical walls; some hold water and form natural ponds or lakes.