Calcium sulfate an unusual property: when mixed with water at normal (ambient) temperatures, it quickly reverts chemically to the preferred dihydrate form, while physically "setting" to form a rigid and relatively strong gypsum crystal lattice: This reaction is exothermic and is responsible for the ease with which gypsum can be cast into various shapes including sheets (for drywall), sticks (for blackboard chalk), and molds (to immobilize broken bones, or for metal casting). Mixed with polymers, it has been used as a bone repair cement. Small amounts of calcined gypsum are added to earth to create strong structures directly from cast earth, an
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