National Stone Association

The most comprehensive set of test methods for calcium carbonate has been assembled by the Pulverized Limestone Division of the National Stone Association. Methods for particle size, brightness, +325 mesh (44 -lm), and percentage of calcium carbonate have been pubflshed standards are available and have been well characterized (5). The Technical Association of the Pulp and Paper Industry (TAPPl) has pubflshed methods for calcium carbonate used in the paper industry (6). 

Pulveri dEimestone Division Test Methods, National Stone Association, Washington, D.C., 1991. 

Report. America Mining Congress and National Stone Association. 

A. T. Goldbeck and J. E. Gray, A Method of Proportioning Concrete for Strength, Workability, and Durability, Bull. No. 11, National Crushed Stone Association, Washington, D.C., 1953. 

Below-grade walls may be constructed of poured concrete, masonry blocks, or other materials such as all-weather wood or stone. This chapter discusses details for use of poured concrete and masonry foundation because these are the materials most commonly used for new construction. Recently, trade associations such as American Plywood Association (APA) and the National Forest Products Association (NFoPA) have issued publications on designing radon resistance permanent wood foundations. Information on these types of foundations can be found by contacting the appropriate trade association.21... 

Calcium and oxalate arc closely associated with the fomiation of stones in the urinary tract. Kidney stones (renal calculi) and bladder stones are mineral deposits containing protein. They can have a diameter of a centimeter or greater. Most kidney stones (75%) are composed mainly of calcium oxalate or calcium oxalate with hydroxyapatite. Uric acid stones account for about 10% of stones xanthine stones are rare. Calcium containing kidney stones occur in fetem nations and affect about one person in 1000. The disease may occur in children, but typically occurs after rhe age of 30 and in men, Calcium biadder stones occur malniy in the children of underdeveloped countries, such as Thailand, and occur rarely in West em nations. Some kidney stones do not result in symptoms. Others may cause blood loss in the urine. Stones that obstruct the flow of urine from the kidney into the ureter result in violent pain, nausea, and vomiting. 

A. Caldas, Chemical Identification of Cannabis," Analytica Chimica Acta 49 (1970) 194 Z.I. El-Darawy et al., Studies on Hashish IV Color Reactions of Cannabinols, Qualitas Plantarum Materiales Vege-tabilis 22 (1972) 7 Anon, Methods for the Identification of Cannabis," United Nations Secretariat Document ST/SOA/Ser. S/1 H.M. Stone, An Investigation into Forensic Chemical Problems Associated with Cannabis, United Nations Secretariat Document ST/SOA/Ser. ... 

Stone, H.M. An Investigation into Forensic CHiemical Problems Associated with Cannabis." United Nations Secretariat Document ST/SOA/ Serv. 19. 

GAS-COOLED REACTOR ASSOCIATES GENERAL ELECTRIC COMPANY OAK RIDGE NATIONAL LABORATORY STONE WEBSTER ENGINEERING CORP. 

Ancient artisans also chiseled, cut and formed tortoise shell in addition to chiseling stone, ivory, animal hooves and horns. The word plastics was used in a mold patent in 1862 and in spite of an attempt by the National Electric Manufacturer s Association (NEMA) to change it to "s30ithoid", the word plastic continues to be used. The original chiselers were called homers but the name plastics technologists or engineers has now displaced this restrictive term in the USA. 

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