QUARRIES IN HANCOCK COUNTY. 85 
Rock structure: The striking geological feature is the rectangular 
curved joint described on page 39 and shown in PL VI, B. "Flic 
sheets are from 3 to 10 feet thick and dip from 10 to 15° W. and 
SW. The joint courses are shown in fig. 7. Joints A recur every 
100 feet and form a heading at right of curved joint, as shown in 
PI. VI, B. The rift is vertical, with a course N. 50° W., not very 
pronounced. There are small dikes and thick lenticular knots of 
very fine grained bluish-gray aplite. Dark-gray knots measure up 
to 10 by 4 inches. Sap is confined to the upper sheets, and does not 
exceed 2 inches in width. There arc no rust stains. 
The plant consists of 3 polishing machines, 3 hoisting engines, :) 
derricks, and 1 steam drill. 
Transportation is effected by team to docks, one-third mile off. 
The product is used for buildings and monuments, and the waste 
^oes into paving blocks. The chief market is New York. Speci- 
men buildings: Woman's Hospital, in New York; Mercantile Trust 
Company's and Caledonia Insurance Company's buildings, in St. 
Louis. Contracts in 1905: Part of extension to House of Represen- 
tatives; part of District of Columbia municipal building; First Day 
uid Night Bank, New York; Delamar and Brokaw residences, New 
York; chemical laboratory of Pratt Institute. Brooklyn, N. Y. ; 
Ihemical laboratory of Stevens Institute of Technology, at Hoboken, 
N. J., and a fountain with a large monolithic bowl for Deep River, 
Conn. 
The Bluehill Granite Company's quarries are H to 2 miles east of 
Bluehill village. The company is no longer in existence. The prop- 
erty is now owned by L. D. Willcutt & Son, 166 Devonshire street, 
Boston, but the quarries are not operated. 
The granite is identical with that of the White quarry. 
The quarries consist of three openings, one south of the White 
|uarry, near the harbor; another south-southeast of that quarry, 
about 150 feet square and from 10 to 30 feet deep, and the third 
about one-half mile east of White quarry and 100 feet above it. 
This opening, known as the " doorstone quarry," is about 200 feet 
square and from 5 to 10 feet deep. 
Rock structure : At the second opening the sheets are from 1 to 10 
feet thick and undulate horizontally. At the third they are thinner, 
but have the same attitude. At the second opening a granite dike 
(described on p. 46) 18 inches thick strikes N. 55° E. and dips 80° 
NW. A joint and a heading strike N. 80° E. and dip 90°. At the 
third opening a vertical heading strikes N. 40° E. and a vertical 
joint strikes N. 70° W. 
The product : The Eastport, Me., post-office and part of the Pitts- 
burg, Pa,, post-office and the Washington, D. C, Loan and Trust 
Company's building, corner of F and Ninth streets, are of granite 
