178 A.2d 685 CAMILLE BOUCHER v. THE JOHN SWENSON GRANITE COMPANY, INC. a. No. 4978.Supreme Court of New Hampshire Merrimack.Argued October 3, 1961. Decided March 6, 1962. 1. Where the medical evidence established that the plaintiff prior to commencement of his employment with the defendant was afflicted with an early stage of silicosis which gradually […]