First Edition. Samuel Bernard Schaeffer dustjacket art. Author's scarce first book. "A smashing novel of river-tunneling conflict. Laboring in compressed air at dangerous depths beneath the river, they jest at death - these stalwart men called 'sand hogs'." Basis for the 1935 Raoul Walsh directed Fix Film starring Edmund Lowe, Victor McLaglen and Charles Bickford. Chase was a popular screenwriter whose credits include Night Passage, Sea Devils, Lone Star, Iron Man, Red River, etc. Near Fine in Very Good plus dustjacket, few tiny chips at top spine end and few flap corners.