Calcium Carbide was the fuel used in old time "miners lamps" to provide a flame for light,altough dim ,by wetting it,burned.The gas produced (acyetylene) is also very combustable and/or EXSPLOSIVE depending on the amount of oxygen available.Also,much modern torch use acetylene is still made this way.Shops that use large amounts of acetylene still have "acetylene generators" using Humidified calcium carbide,as it is cheaper to produce than buying the bottled stuff.HA HA;I'm smarter than you!!!
I'm sure that Anne Sullivan and Helen Keller,now sit with God.An almost impossible task.Even today,our poor, thougthless society finds it easier to discard the disabled than help.Perhaps they(the diabled) are wiser than we.