Default image

Dr. Mark McMurtry

The Idiot who started a riot that no one showed up for.

Why Does iAVs Use Sand?

The use of sand for use in water filtration pre-dates recorded history. Sand was ‘understood’ to be a highly effective means of purifying water by the Babylonians, ancient Africans, Chinese, Egyptians, Israelis, Native Americans etc … albeit that they did…