www.CassalDrilling.com Afiliate Partnership Program. Ability to earn a substantial amount Cassal Drilling Pty Ltd (“Cassalâ€) is a privately owned company operating in the areas of mineral exploration, petroleum exploration and mining activities in Canada, Israel and other locations. Apart from it’s mineral and petroleum drilling activities Cassal has ownership of a number of on-shore petroleum and high grade oil shale tenements which it is currently developing. The development of oil shales in Israel can be comparable to the "once laughed at" opportunity of Canada's tar sand projects - which are now highly successful. Resources in Israel include deposits that outcrop at surface with no overburden. Image to left : Current mining activities at the RA Deposit, remove the Oil Shale as over burden in order to get at high grade phosphate rock.