O senhor X escreveu; hoje somos todos mineiros, resgatados de um qualquer buraco escuro.
"Vance has trapped for several years in a West Virginia coal mine at 75 cents a day for 10 hours work. All he does is to open and shut this door: most of the time he sits here idle, waiting for the cars to come. On account of the intense darkness in the mine, the hieroglyphics on the door were not visible until plate was developed."
© Lewis Hine, 1908