Abstract: A system for mapping a fracture comprising: a fracture located within a subterranean formation; a proppant pack located within the fracture, wherein at least a portion of the proppant are coated with a curable resin system comprising a curable resin and an electrically-conductive, nano-sized material, and wherein the coated proppant is electrically conductive; a transmitter that sends an electrical signal into the proppant pack; and a receiver that receives the electrical signal from the proppant pack. A method of mapping at least a portion of a fracture comprising: introducing proppant into the fracture; coating at least a portion of the proppant with a curable resin system, wherein the curable resin system comprises: a curable resin; and an electrically-conductive, nano-sized material, wherein at least the portion of the proppant becomes electrically-conductive after the step of coating; and using the electrically-conductive proppant to map at least the portion of the fracture.