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CONTENTS

[The dates of publication of the separate chapters are given in parentheses]

Sulphur and pyrites, by H. M. Meyer (Apr. 21, 1924)

Magnesium and its compounds, by J. M. Hill and G. F. Loughlin (July

Page

1

7

28, 1924)...

Strontium, by G. W. Stose (July 19, 1924).

23

Fuel briquets, by W. F. McKenney (Sept. 26, 1924).

Fluorspar and cryolite, by H. W. Davis (July 25, 1924).

27

41

Slate, by G. F. Loughlin and A. T. Coons (Sept. 25, 1924)

Gypsum, by K. W. Cottrell (Sept. 27, 1924)

49

63

Clay, by Jefferson Middleton (Oct. 13, 1924) –

Peat, by K. W. Cottrell (Sept. 27, 1924).

Barytes and barium products, by C. E. Siebenthal and E. R. Phillips

(Oct. 16, 1924)..

69

71

79

Carbon black produced from natural gas, by G. B. Richardson (Sept. 29,

1924).

Asphalt and related bitumens, by K. W. Cottrell (Oct. 20, 1924)

Salt, bromine, and calcium chloride, by K. W. Cottrell (Oct. 18, 1924)..

Mica, by B. H. Stoddard (Oct. 8, 1924)

Sand and gravel, by A. T. Coons (Nov. 5, 1924).

Talc and soapstone, by B. H. Stoddard (Nov. 6, 1924).

Potash, by G. R. Mansfield and Leona Boardman (Dec. 12, 1924).

Stone, by G. F. Loughlin and A. T. Coons (Dec. 18, 1924).

Silica, by F. J. Katz (Nov. 28, 1924).

125

Lime, by G. F. Loughlin and A. T. Coons (Dec. 19, 1924).

275

Feldspar, by Jefferson Middleton (Dec. 22, 1924) -

285

Cement, by E. F. Burchard and B. W. Bagley (Dec. 26, 1924)

293

Natural-gas gasoline, by G. B. Richardson (Mar. 28, 1925).

359

Petroleum, by G. B. Richardson (Aug. 27, 1925)

365

Coke and by-products, by F. G. Tryon and H. L. Bennit (May 13, 1926) -

Coal, by F. G. Tryon and L. Mann (Aug. 30, 1926) - - .

427

499

ILLUSTRATIONS

PLATE I. Map of western Texas and adjoining territory, showing the
location of wells that have furnished potash data.

II. Depths at which potash has been found in western Texas, per-
centage of potash present, and character of material pene-
trated

III. Map of United States showing distribution of cement plants---

IV. Production of petroleum in the United States, Russia, Mexico,

and all other countries, 1859-1923-

Page

180

180

306

370

V. Production curves of the principal oil-producing States, 1890-

1923...

394

VI. Monthly fluctuations in output of bituminous coal and in

volume of trade, 1905-1923.

VII. Changes in number of men employed, 1920–1923-

506

553

91288

FIGURE 1. Fuel briquets produced in the Eastern, Central, and Pacific

Coast States and in the United States, 1907–1923 –

2. Distribution of fuel briquets in 1923.--

3. Location of fuel-briquetting plants in the United States in

relation to coal fields..

4. Quantity of slate sold in the United States, 1891-1923, by

uses, in short tons (approximate), and quantity of stone

granules sold in the United States, 1919-1923, in short tons__

5. Value of slate sold in the United States, 1891-1923, by uses,

and value of stone granules sold in the United States, 1919-

1923..

6. Total sales of mill stock and of classes of mill stock for which

figures are available, 1890-1923, in square feet_

Page

41

44

46

50

52

53

7. Weekly quoted prices of crude barytes and of barium products

and barium chemicals, 1923____

87

8. Production, total value, and average value per ton of fuller's

earth from 1895 to 1923___.

9. Number of commercial springs, annual production, total value,

and average value per gallon of mineral waters in the United

States reported from 1883 to 1923-

10. Talc and soapstone produced in the United States, 1880-1923-

11. Map of the United States, showing the location of the Texas

potash field and of other sources of potash_---

104

113

161

180

286

299

14. Prices of Canadian asbestos "crude" and "fiber," f. o. b.

Quebec, 1920–1923__.

345

12. Crude feldspar produced in the United States, 1907–1923-

13. Monthly fluctuations in production, shipments, and stocks of

finished Portland cement, 1922 and 1923_

15. Natural-gas gasoline produced, total quantity of natural gas

consumed, and portion treated for the extraction of gaso-

line, 1911-1923__

16. Crude petroleum produced, imported, exported, and delivered

to consumers in the United States, 1909-1923_.

17. Pipe-line and tank-farm stocks of crude petroleum contrasted

with indicated days' supply, 1917-1923.

18. Daily average production of petroleum, production plus im

ports, and indicated deliveries to domestic consumers plus

exports, by months, 1919-1923...

359

366

401

401

19. Supply and demand for crude petroleum contrasted with price

of Oklahoma-Kansas grade crude petroleum, 1918-1923--

20. Energy equivalent of coal, petroleum, and natural gas, 1882-

1923__

406

22. Production of bituminous coal compared to consumption and

exports, 1916-1923___

21. Oil wells completed in the United States, price of Oklahoma-

Kansas grade crude petroleum, and daily average produc-

tion of petroleum, by months, 1918-1923. -

409

414

504

23. Bituminous coal and anthracite produced, 1890-1923.

24. Average production of soft coal per working day for each

week, 1921-1923_.

505

508

25. Total commercial stocks of bituminous coal, October 1, 1916,

to January 1, 1924.

509

26. Monthly production and consumption of soft coal in 1923.

27. Monthly changes in stocks in 1923.

510

510

28. Monthly average spot prices of bituminous coal f. o. b. mines,

1923

511

29. Per cent of idle, part-time, and full-time mines in nine repre-

sentative weeks, 1922-1924 _ _ _ .

512

513

30. Monthly prices of anthracite f. o. b. mines, 1913-1923-

31. Production, calculated full-time capacity, men employed,

mine price per ton, and average number of days lost at

bituminous-coal mines, 1890-1923

514

32. Annual production of bituminous coal and line of normal

trend, 1899-1923..

520

33. Relative rates of growth of bituminous coal, oil and gas,

water power, and total energy, 1879-1923..

523

FIGURE 34. Percentage of total heat value furnished by each mineral fuel,

1819-1924_..

35. Rank of principal States in production of bituminous coal,

1913, 1918, and 1923__.

36. Number of men employed in bituminous-coal mines that

worked specified number of days in 1913, a normal year;

1914, a year of depression; and 1918, the year of maxi-

mum activity.

37. Output of bituminous coal per man underground per day

and average length of established working day, 1911-1923

38. Output of bituminous coal per man employed per day in two

union and two nonunion States and in the United States

as a whole, 1900-1923___

Page

524

533

566

570

573

39. Per cent of total bituminous output mined by different

methods, 1911-1923..

577

40. Bituminous coal produced by undercutting machines and

strip pits, 1891-1923___

581

41. Tonnage of washed coal and percentage of bituminous coal

output washed, 1906-1923. -

42. Relative numbers and production of large and small bitu-

minous coal mines in 1923_ _

589

592

43. Number of commercial mines in each size class, 1905-1923-

44. Relative number of large and small bituminous-coal pro-

ducing companies in 1920, and number of mines and ton-

nage which they control...

609

613

45. Production of coal per working day and trend of spot prices

in Alabama, 1918-1923..

650

46. Production of coal per working day in Colorado, Utah, and

New Mexico, 1918-1923.

47. Production of coal per working day in Illinois and trend of

spot prices, run-of-mine, in three districts, 1918-1923---

48. Production of coal per working day in Indiana and trend of

spot prices on fourth and fifth vein coal, 1918-1923__

49. Production of coal per working day in Iowa, Kansas, Missouri,

Arkansas, and Oklahoma, 1918-1923.

656

660

665

670

50. Production of coal per working day in Kentucky and trend of

spot prices, run-of-mine grade, for eastern and western

Kentucky, 1918-1923.

674

51. Production of coal per working day in Montana, North

Dakota, Washington, and Wyoming, 1918-1923 –

685

52. Production of coal per working day in Ohio and trend of

spot prices, run-of-mine grade, in No. 8 and Hocking

districts, 1918-1923.

692

53. Shipments of anthracite, by regions, 1830–1923-

705

54. Anthracite shipped from breakers, washeries, and dredges,

1890-1923.

711

55. Sizes of anthracite shipped from mines and washeries, 1890-

1923__

713

56. Percentage of each size in shipments of anthracite from break-

ers, washeries, and dredges, 1923...

715

57. Production of bituminous coal per working day in Penn-

sylvania and trend of spot prices, run-of-mine grade, in

Pittsburgh, Clearfield, and Somerset districts, 1918-1923__

58. Production of coal per working day in Virginia, Tennessee,

and Maryland, 1918–1923 _ -

724

729

59. Production of coal per working day in West Virginia and

trend of spot prices of smokeless and Kanawha, run-of-

mine grades, 1918-1923--

740