To make certain they would not be taken unawares, Salt relocked the door on the inside. Groping about, he found the lantern Webb had left behind, and lighted it.
Three mines lay on the floor. “Which is the right one?” Penny asked. “They all look alike!”
“Mr. Johnson’s initials must be on the one Webb tampered with.”
Salt turned over one of the mines, inspecting it.
“That thing might go off any minute,” Penny said, edging away. “Do be careful, Salt.”
Salt chuckled. “If it should go off, we’d never know what hit us,” he said. “This is the one Webb tampered with all right. Penny, how are you at forging?”
“Forging?” she repeated, not understanding what he meant.
“Can you duplicate Mr. Johnson’s initials on another mine?”
“Oh, I don’t think so. Not so it would look the same.”
“Sure, you can,” Salt said, thrusting his pocket knife into her hand. “It will be dark and no one will look too carefully.”