Basalt and related rocks (trap rock) sold or used by the producers in the United States, 1922 and 1923, by uses

Total (quantities approximate, in short tons)... 10,032, 900 12, 600, 611 10, 674, 470

188, 759 182, 958

12, 473, 628 628, 297

13, 539, 648

Basalt and related rocks (trap rock) sold or used by the producers in the United States,

1922-23, by States
[Quantities approximate]

59, 600 237,810 9, 603, 850 75, 360

119, 793

44, 460

228,448

255, 020

11, 654, 268
519, 352

10, 247, 680

85,200

Basalt and related rocks (trap rock) sold or used by the producers in the United States in 1923, by States and uses

active

Basalt and related rocks (trap rock) sold or used by the producers in the United States in 1923, by States and uses-Continued

▸ Composed of 85,200 short tons of roofing granules, valued at $628,297, from California, Michigan, Minnesota, and Pennsylvania; and 241,120 paving blocks, valued at $8,342 ($34.60 per M), from Connecticut, Hawaii, and New Jersey.

MARBLE

SUMMARY

There was an increase of over 31 per cent in the quantity and 22 per cent in the value of the total output of marble in 1923. The quantity of building stone increased 24 per cent and the monumental stone 30 per cent.

The average value per cubic foot for all classes of marble building stone except that sold for dressed interior work decreased. There was also a decrease in the average value of monumental stone. The amount of marble sold as by-products from the quarries represents about 46 per cent of the total output. This is sold as crushed stone, fluxing stone, marble "flour," terrazzo, mosaic, stucco, etc.

Marble sold by the producers in the United States, 1922-1923, by uses

• Building-stone figures may be somewhat less than given and monumental stone somewhat more, as some of the Tennessee producers were unable to divide their product according to use.

Marble sold by the producers in the United States, 1922–1923, by States

• Alabama includes Arkansas, New Mexico, and Texas; Alaska includes Colorado and Utah; Maryland includes New Jersey, North Carolina, and Virginia.

Alabama includes Arkansas; Alaska includes Colorado, Michigan, Utah, and Washington; Maryland includes New Jersey, North Carolina, Pennsylvania, and Virginia.

SERPENTINE

The figures showing sales of serpentine (verde antique) in the United States for interior and exterior building, dimension stone, and by-products are included in this report in the figures for marble, but those showing sales of serpentine as crushed stone for road metal, ballast, riprap, and other low-grade material and as especially prepared crushed stone for terrazzo, stucco, and flour are included in the figures for "miscellaneous" stone. The total output of serpentine is given in the following table:

Serpentine (verde antique) sold or used by the producers in the United States, 1922 and 1923, by uses

The output of limestone as shown in this report was 30 per cent more in 1923 than in 1922. All the important items showed increases. Building stone increased 16 per cent, crushed stone 26 per cent, fluxing stone 37 per cent, agricultural limestone 7 per cent, and limestone for miscellaneous uses, chiefly manufacturing industries, 39 per cent.

Limestone sold or used by the producers in the United States, 1922 and 1923, by uses

Figures for building stone include small amounts for monuments, curbing, and flagging in 1922, and for monuments in 1923.

See table on p. 224 for further distribution of limestone products.

9786°-26-15

Limestone sold or used by the producers in the United States, 1922 and 1923, by