Possibly Tin Streaming Works at Rospeath Mine, Ludgvan.
Tin was processed & stamped
Info given by Mrs Ellis relative - lady in black Laura Bowden seamstress made curtains in Blue Room on the Mount
Photograph in image sellotaped to paper
Engraving showing Surface Workers Levant Mine
Signed bottom right corner "The Levant mime (sic) drawn and etched by AMP"
Word below possibly "Poltair"or "Pattern"