Hayle. —Railway Cuttings. —ln the tenement of Melli-noweth, in Phillack, on which the east part of Angarrack Viaduct is supported, the deep cuttings of the West Corn-wall Railway have intersected three large cross-courses, one of which,  running  north  and   south, is four feet big, has a beautiful Gossan, and takes the direction of the cross-course in  Great Herland Mine, distant about half-a-mile, from which cross-course about 50 years ago a large quan-tity of silver was raised.    The cuttings have also intersected a very promising caunter lode  at Cold Harbour (an ad-joining tenement) about four feet big,  which, from its bearing,  would run through the rich mine of   Alfred Con-sols and is probably the same lode.