Chalk It is formed in the sea by sub-microscopic plankton, which fall to the sea floor and are then consolidated and compressed during diagenesis into chalk rock. Most people first encounter the word "chalk" in school where it refers to blackboard chalk, which was originally made of mineral chalk, since it readily crumbles and leaves particles that stick loosely to rough surfaces, allowing it to make writing that can be readily erased. Blackboard chalk manufacture now may utilize mineral chalk, other mineral sources of calcium carbonate, or the mineral gypsum (calcium sulfate). While gypsum-based blackboard chalk is the lowest cost to
Ship Sticks Ship Sticks Ship Sticks (Ship Sticks LLC), founded in 2011, Ship Sticks is a private company based in West Palm Beach, Florida. It was founded by Jonathan Marsico and Nicholas Coleman, its CEO. It offers a novelty service wherein customers' golf clubs, skis and other luggage are shipped to them at a desired destination. It allows scheduling of shipment dates, pickup and insurance: a $200 consequential insurance and $1000 loss insurance. Ship Sticks uses an online interface that enables the user to select from partner pre-loaded golf courses (such as Bandon Dunes, Grand del Mar or PGA National). This in