FalakKnowledge Contributor									
															
						I am taken from a mine, and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?
													I am taken from a mine, and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?												
												
												
		 
                    
Pencil lead (graphite).