DRAFT OF A CLASSIFICATION FOR THE WORLD's FAIR. 673 



21. Mine Engineering. ( Illustrated by Models, Maps and Sections.) 



210. HisToiiY OF Mixing Methods. 



Retrospective exhibits. Plana of abaudoned mines. Aucient methods. 

 Early literature of the art. Pictures and models. 



211. Pkospecting and Plotting of Mines. 



Surface surveying and maps. Nature and extent of deposits. 

 ITuderground surveys and projection of work, location of shafts, tunnels, 



etc. 

 Surveys for aqueducts and drainage. 



212. Mining Shafts and Tinnkls. 



Sinking and lining of shafts, wells, adits, tunnels, bevels, aqueducts, timber- 

 ing, lagging, etc. 

 Cutting stalls, headings, etc. 

 Opening, stopping and breaking down ore. 

 Hoisting and delivery of ore. Raising and lowering nuners. 



213. Drainage, Ventilation and Lighting of Mines. 



Drainage by pumps, pumping engines, l>uckets or adits. 



Ventilation — Methods and apparatus. 



Lighting — Lamps, safety lamps. 



Signals. Parachutes. Safety apparatus. 



214. Subaqueous Mining, Blasting, etc. 



Methods, apparatus and history. 



215. Quarry Engineering. 



216. Oil Wells: Machinery and Management. 



(See Class 153.) 



217. Natural Gas: Machinery and Management. 



(See Class 154.) 



218. Instruments of Precision used in Mine Engineering. 



219. Models and Plans of Representative Mines. 



22. Mining and Metallurgical Tools and Machinery. 



220. Ancient Tools for Mining, Quarrying and Smelting. 



Retrospective exhibits, literature, etc. 



221. Miners' Tools. 



Hammers and mauls, picks, chisels. crowl)ars, wedges, drills. 

 Other tools and articles of personal ecjuipinent. Sieves, shovels, scoops and 

 barrows. 



222. Drilling and Borinc; Machines for tse in Rock and Earth. 



Machinery of shaft and well-cutting. 



223. Machines and Apparatus for Coal Cutting, etc. 



224. Excavating and Dredging Machines. 



Steam scoops and shovels. Steam dredge scoops, suction excavators, etc, 

 Machinery for hydraulic and placer mining. 



225. Hoisting Machinery for Mines. 



Hoisting appliances for miners or product. 

 Machinery used in pumping, draining and ventilation, 



226. BLASTIN(i AND EXPLOSIVES. 



Retrospective exhibit. History of blasting. Literature. 

 Explosives of all kinds (exhibit to be by model or empty package). 

 Fuses and accessories of blasting. 



227. Crushing and Sorting Machinery, etc., for Ores and Rocks. 



Crushing, grinding, sorting and dressing machines. Breakers, stamping 



mills, sieves, screens, jigs, concentrators, 

 SM n, PT 2 43 



