Open Voter Registration and Ballot Cast System OpenCast will be a truly open electronic voting system. Commercial providers offer little accountability, but do, coincidentally, offer lots of campaign contributions to politicians.
This refers to a type of surface mining, where the rock which is required (often coal) lies below a covering (or overburden) of rock which has to be removed. This is often blasted, dug and then ?cast? out of the way, so that the valuable mineral can be extracted.