“Not very. The Mon’s about eight or ten feet. Shallower in many places, depending on rain. About the same for the Allegheny.”

“And the Ohio?”

“About the same . . . Why?”

Mary’s eyes were burning.

“Why?” Jim repeated sharply.

“Even scab coal has to reach Pittsburgh to be shipped by trains to the eastern cities and by barge to the west.”

“I don’t understand,” said Jim. He understood fully, but he didn’t want to hear it.

Mary said, “The barges that sunk at Gleasonburg blocked the river for four days. One tow’s worth of barges, brother, a single fleet. What would happen at Pittsburgh if many, many, many barges sank and blocked the river?”

“No coal would move,” said Jim Higgins.

“No coal to the Pittsburgh mills,” said Mary. “No coal trained east to the cities. No coal barged west down the Ohio.”

“But the miners are already marching. What about the march? A peaceful march.”

“The marchers will need all the help they can get. This will help them.”

“Sabotage is war, Mary.”

“Coal is the lifeblood of the capitalist class.”

“War means death.”

“Precisely, brother. Without coal, the capitalist class will die.”

•   •   •

ISAAC BELL headed to New York to get a handle on the new owners of Gleason Consolidated Coal & Coke. He wangled the last seat on the Pennsylvania Special by flourishing Kenny Bloom’s rail pass. Ten thousand buyers from out-of-town firms were flocking to the city to purchase merchandise for the fall and winter, and the eastbound trains were packed.

“Don’t let the Boss catch sight of you before you can prove what’s driving your provocateur,” Wish Clarke warned as they parted in Pittsburgh. Wish was heading out to Chicago to ask Laurence Rosania who, in a safecracker’s opinion, might practice the esoteric and extremely rare art of shaping explosives. “He’ll pepper you with questions: Who is he? Who’s behind him? What do they want? Better have a clear idea or he’ll switch you to another case.”

But Bell had been far from forming clear ideas, even before the explosions on the Monongahela. Was a saboteur provoking violence for profit or to win the war between labor and operators? Whoever bought Gleason Consolidated Coal & Coke could be angling for both.

“I can’t dodge Mr. Van Dorn. I have to go to the office to tap the new research man.”