. Economic Papers. nd in the State may be sent to the office of theGeological and Economic Survey for identification, and the same will be classifiedfree of charge. It must be understood, however, that no assays, or quantita-tive examinations, will be made. Samples should be in a lump form if possi-ble, and marked plainly on outside of package with name of sender, post-officeaddress, etc.; a letter should accompany sample and stamp should be enclosed forreply. These publications are mailed to libraries and to individuals who may desireinformation on any of the special subjects named, free of c
. Economic Papers. nd in the State may be sent to the office of theGeological and Economic Survey for identification, and the same will be classifiedfree of charge. It must be understood, however, that no assays, or quantita-tive examinations, will be made. Samples should be in a lump form if possi-ble, and marked plainly on outside of package with name of sender, post-officeaddress, etc.; a letter should accompany sample and stamp should be enclosed forreply. These publications are mailed to libraries and to individuals who may desireinformation on any of the special subjects named, free of charge, except that ineach case applicants for the reports should forward the amount of postage needed,as indicated above, for mailing the bulletins desired, to the State Geologist,Chapel Hill, N. C. THE NORTH CAROLINA GEOLOGICAL ANDECONOMIC SURVEY JOSEPH HYDE PRATT, State Geologist ECONOMIC PAPER No. 23 THE MINING INDUSTRY IN NORTH CAROLINA DURING 1908, 1909 and 1910 BY JOSEPH HYDE PRATT. AND MISS H. M. BERRY. RALEIGH Edwards & Broughton Printing Co., State Printers and Binders1911 r f7 6 o (\ GEOLOGICAL BOARD. Governor W. W. Kitchin, ex-officio Chairman Raleigh. Frank R. Hewitt Asheville. Hugh MacRae Wilmington. R. D. Caldwell Lumberton. M. R. Braswell Rocky Mount. Joseph Hyde Pratt, State Geologist Chapel Hill. LETTER OF TRANSMITTAL. Chapel Hill, N. C, November 15, His Excellency, Hon. W. W. Kjtchin, Governor of North Carolina, Sir:—I herewith have the honor to submit for publication as Eco-nomic Paper No. 23, a Report on the Mining Industry in North Caro-lina for the years 1908, 1909, and 1910. Yours respectfully, Joseph Hyde Pratt, State Geologist. TABLE OF CONTENTS. PAGE Introduction 9 Gold and silver 10 Production 17 Copper 19 Copper ores of the Virgilina District of North Carolina and Virginia: Introduction 19 Geography and geology 20 Location 20 Geology . 20 The veins and ores 22 Summary and conclusions 28 Production 28 Iron . 29 Production 30 Tin ; 30 A
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