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A dictionary of arts, manufactures, and mines : containing a clear exposition of their principles and practice / by Andrew Ure
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314

COPPER.

.he whole supply of copper for the world, by which prices would be regulated and maintained, and our copper-mining interests put beyond the reach of successful rivalry.

This country did not furnish any supply of unwrought copper to the continent olEurope, or to the United States of America , which was worthy of notice, before the yeai1830; in fact, previous to that time, we imported considerable quantities of foreigncopper for re-exportation to India . It is easy to explain how the produce of foreignores, being prohibited from export in any other shape, has, in fact, opened for itself anew debouche, and this is illustrated by the table, showing the growth of the export otunwrought copper from 1830. To prove that this is not merely a simultaneous advancein the export of all sorts of copper, a corrected table is subjoined from the official returns,comprising the whole export, and divided so as to illustrate the operation of the coppe)produce of foreign ores upon our foreign copper trade.

Copper exported:—

Years ending

Wrought.

Unwrought.

Total.

To ail parts.

To India .

To all parts.

To all parts.

5th January, 1825 - - -

Tons.

Tons.

Tons.

960.

Tons.

1826 - - -

-

-

J827 - - -

-

-

130

1828 - - -

-

-

1329

1829 - - -

_

—

1079

1830 - - -

5327

1801

2682

8,009

1831 - - -

6172

2317

3150

9,322

1832 - - -

5171

2423

3714

8,885

1833 - - -

5855

2312

4569

10,424

1834 , - -

5417

1769

4019

9,436

1835 - -

4787

2104

5283

10,072

1836 - - -

5948

1993 .

5935

11,883

1837 - - -

6105

1588

3909

10,014*

Production of Copper in Great Britain :

Years.

Ores.

Meta).

1771—1781

Tons.

28,185

Tons.

3380

1781—1791

32,854

4123

1791—1801

48,034

67,533

4083

1801—1811

6060

1811—1816

78,237

7181

1816

83,058

7045

1817

75,016

6608

1818

80,525

6714

1819

92,234

7214

1820

92,672

7364

1821

98,803

8163

1822

106,723

9331

1826

128,459

—

1827

—

12,381

1828

153,600

12,169

1829

—

11,994

1830

_

13,097

1831

' _

14,480

1832

—

14,463 f

* Supplement to the Minin* Jon mol, Feb. 28,1838.t Taylors Reootda of Mining, Part I, p. 171.