General Information

Serial #

N/A

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

COPPER PLATE. HEAVY PAPER COVER OR WRAPPER APPEARS TO BE REINFORCED WITH LINEN

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length

40.6 cm

Width

35.1 cm

Height

N/A

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Exploration and Survey

Category

Miscellaneous

Sub-Category

N/A

Manufacturer

AKA

Survey CA

Country

Canada

State/Province

Ontario

City

Ottawa

Context

Country

Canada

State/Province

Ontario

Period

THIS PLATE PROBABLY USED C.1936-1950S, AND POSSIBLY LATER

Canada

EXAMPLE OF PRINTING PLATE PRODUCED & USED BY GEOLOGICAL SURVEY OF CANADA INTHEIR MAP & DRAWING PRODUCTION PROCESS. PLAN INCLUDES MAGNETIC DECLINATION MEASUREMENTS & MINERAL DEPOSIT SITE IDENTIFICATION, IN ADDITION TO PHYSICAL RECORD OF AREA.

Function

IMAGE CARRIER, FOR USE WITH GRAVURE PRINTING PROCESS

Technical

ONCE PREPARED FOR PRINTING (INK INTRODUCED INTO ALL INCISED AREAS, AND EXCESS WIPED CLEAN), THIS PLATE WOULD BE PUT THROUGH A ROLLER PRESS TO PRODUCE ALMOST ONE-HALF OF PRINTED PLAN. THESE PLATES RETAINED THEIR FINE, SHARP FEATURES AND WERE USED FOR MANY YEARS BY GSC TO PRODUCE INNUMERABLE MAPS, SITE PLANS, DRAWINGS, ETC.

Area Notes

Unknown

Details

Markings

PLATE BEARS ENGRAVED PLAN, INDEX TO SIGNS [USED] AND EXPLANATION OF GRAPHIC SYMBOLS; 'NOTE./ The structure of this district is not/ everywhere known with certainty owing/ to the few rock exposures and to the/ limited mining development./ The plan is published, however, as it/ may encourage further development/ in certain indicated directions.', AND ONE LETTER ONLY 'C' OF TITLE. PLATE ALSO BEARS PORTION OF SCALE, 'C.O. Senecal B.A. Sc., Geographer and Chief DraUGHTsman.', AND 'G.S. Nov.30.36/ GEOLOGICAL SURVEY/ OF/ CANADA'/ PAPER COVER BEARS COMPLETE MAP ON ONE SIDE; HAND LETTERED LABELLING ON REVERSE: 'Cochran Hill Gold Dist.;' '1-3' AND IN BLACK GREASE PENCIL '287'

Missing

NONE- PLATE IS COMPLETE IN ITSELF. SECOND PLATE NEEDED TO PRODUCE COMPLETED DRAWING IS MISSING.

Finish

NATURAL COPPER-COLOUR. OFF-WHITE PAPER COVER

Decoration

N/A