Page:Statesman's Year-Book 1921.djvu/118

 66

THE BRITISH EMPIRE : — UNITED KINGDOM

III. Mining and Metals.

General summary of the mineral production of the United Kingdom in 1918 and 1919 :—

1918

191

9

Description of Mineral

Value at the

Value at the

Quantity

Mines and Quarries

Quantity

Mines and Quarries

Tons

£

Tons

£

Alum shale ....

5,231

5S8

4,848

545

Antimony ore '■ '" >

1

4

Arsenical pyrites.

477

4,380

75

667

2,349

210,101

2,527

100,222

Bariam (compounds).

66,360

218,592

60,087

198,550

9,589

2,736

9,221

2,811

Bog ore /

603

151

3,045

761

Ctialk

2,304,24S

164,741

2,629,406

241,863

Chert, flint, &c. .

54,518

13,233

50,082

15,348

Chromite of iron.

140

100

150

150

Clays and shale

6,003,787

1,696,127

7,765,965

2,358,522

Coal

227,748,654

238,240,760

229,779,517

314,113,160

Copper ore and precipitate.

1,213

17,109

372

10,978

Fluorspar

53.49S

41,310

36,860

86,259

Gtarel and mnl.

2,022,567

291,627

2,048,427

336,421

17S.734

108,516

220,003

138,265

Inneous rocks

3,961,524

1,139,952

4,387,703

1,720,932

Iron ora

14,613,032

7,106,656

12,254,195

7,428,366

Iron pyrites.

22,195

20,398

7,336

7,807

Lead ore

14,784

273,462

13,868

256,377

Lignite ....

150

100

Limestone (other than chalk)

10,156,603

1,992,705 33,313

9,537,495 12,078

2,431,627

Manganese ore

17,456

29,111

Natural Gas. . (cub. ft.)

85,000

90,000

Ochre, ui.iber, Ac.

9,480

17,926

10,547

17,483

Oil shale

3,080,867

1,52S,5S4

2,763,875

1,567,050

Phosphate of lime. .

3,372

—

—

—

Salt

1,976,014

1,647,997

1,908,080

2,079,011

Sandstone ....

1,553,151

614,012

1,699,853

971,329

Slate ...

110,197

429,583

164,098

844,394

Soapstone.

936

1,268

688

1,011

Sulphate of strontia

1,014

2,280

1,872

4,210

Tin ore (dressed).

6,378

1,115,926

5,156

678,823

Tungsten ores

302

49,215

166

19,255

9,025

95,680

6,933

62,202

Total «

273,988.449

Sr., (100 1

257,079,792

875,884,528 90,000 1

335,673,503

1 Cubic feet of natural gas.

The metals obtainable from the ores produced in 1919 were : — Copper, 144 tons, value 14,176/. ; iron, 3,808,095 tons, 51,511,064?. ; lead, 10,277 tons, 289,769/.; silver, 68,414 oz., 16,266/. ; tin, 3,272 tons, 842,485/. ; zinc, 2,486 tons, 102,951/. ; total value, 52,776,711/.

The total number of persons ordinarily employed at all mines under tin- Coal and Metalliferous Mines Regulation Acts during 1919 was 1,212,974. The number of mines at work was 3,438. 958,133 persons (males) worked underground, and 245,194 males and 9,647 females above ground. The number employed at quar ies under the Quarries Act was ;">7,<>7<i (excluding persons occasionally employed), of whom 3<i,879 (including 132 females) worked inside the quarries, and 20,197 (including 309 females) outside. The number of quarries at work was 5,135.

1'rofessor H. S. Jevons has estimated the resources of British coal in