224 MISSOURI AGRICULTURAL REPORT. 



richness and extent the mines of IMissouri are paralleled by no other 

 mineral district in the world." 



Coal, Lead and Zinc. — Nearly 40 per cent of the surface of the 

 State is underlaid with a fine quality of bituminous coal. In thirty-seven 

 counties coal mines have been developed and the annual output for the 

 year 1903 was 4,600,000 tons, valued at $6,716,000. The value of the 

 coal product of the State has increased more than 121 per cent in the last 

 15 years, and even a greater development may be expected in the future 

 on account of the number of new mines that are being opened. 



Missouri's Mines Exhibit at the Fair. — The following paragraphs 

 from the report of the Missouri Commission gives in detail an account 

 of the exhibit : 



"Our principal exhibit was that in the Mining Building, and the plan 

 was based on two main ideas : First, to adequately exhibit all of Mis- 

 souri's various mineral resources, including those which are comparatively 

 or wholly undeveloped ; second, to arrange the details of the exhibit so 

 as to attract the attention of the greatest possible number of people. 



In securing materials to put the first idea into efifect, marble, granite 

 and other building stones were actually quarried for our needs ; and 

 blocks of coal, crystals and ores were specially mined for the exhibit. 



The resources exhibited were as follows : The various ores of 

 2inc and lead, massive and -cabinet specimens; all varieties of iron ore 

 found in the State, massive and cabinet specimens ; coal in large blocks 

 and cabinet specimens ; fire clays, kaolin and other varieties of clay, to- 

 gether with the manufactured products, including brick and refractory 

 materials ; sewer pipe, drain tile, roofing tile, building and ornamental 

 brick, paving brick, pottery and terra cotta ; copper, manganese, barite, 

 triopoli, nickel and cobalt, with the various manufactured products ; plate 

 glass sand and products ; molding sand ; road materials with models of 

 roads showing methods of using Missouri materials in the highway con- 

 struction ; building stones, including limestones, sandstones, granites, por- 

 phyries, onyx and marble, in cut and polished cubes and slabs ; mineral 

 waters and a representation of a Missouri artesian well ; hydraulic ce- 

 ment ; lime ; pearl buttons ; zinc and lead concentrates ; iron pyrites. To- 

 gether with these materials there were exhibited a very large collection of 

 strikingly handsome crystal specimens of many varieties, and also an 

 exhibit of pig ore, pig lead, copper and zinc spelter. 



The second idea, or that of attracting the attention of people to our 

 exhibit, was developed by the introduction of moving features, which, 

 so far as possible, were made not only attractive, but educational, and an 

 illustration of processes used in the preparation of Missouri ores for 

 market. 



