112 



CEMENTS, LIMES, AND PLASTERS. 



noted. In Table 36, below, this has accordingly been done. The 

 interest charges have been taken at 6 per cent of the total capital, and 

 no specific allowance has been made for depreciation or repairs, as these 

 items for the year in question must appear under one of the other head- 

 ings. The value of the product has also been calculated, in percentages 

 of the total cost. 



TABLE 36. 



ELEMENTS OF COST OF LIME-MANUFACTURE, EXPRESSED IN PERCENTAGES OF 



TOTAL COST. 



Statistics of the Lime Industry. The importance of the lime 

 industry might easily be underrated were it not that very accurate 

 statistics on the subject are available. These show that for some years 

 past the value of the annual production of lime in the United States 

 has been in the neighborhood of $10,000,000. 



In Table 37 is given the value of the lime production in the United 

 States for the years 1902 and 1903 by States and Territories. These 

 figures are taken from the volumes on " Mineral Resources of the United 

 States", issued annually by the U. S. Geological Survey, and may be 

 accepted as being a close approximation to the actual production. 



In considering these figures it should not be forgotten that they 

 include all the lime burned in the country for whatever purpose the 

 product may be employed. It is probable that o f the $10,105,190, 

 at which the total lime production for 1903 is valued, about $7,000,000 

 would represent the value of the lime used for structural purposes i.e., 

 as mortar, plaster, and in the lime-sand brick industry. Much of the 

 remainder of the product is used in various chemical industries, not- 

 ably in the manufacture of alkali, gas, paper, sugar, leather, etc., etc., 

 while a large proportion is used as a fertilizer. The proportion of lime 



