Preface 



The reasons for the preparation of this study are many. 

 Probably the most important reason is the fact that the hmestone 

 quarry industry of Southern Indiana has reached a point in its 

 development where it can advance only by a change in methods 

 and by the introduction of new and up-to-date processes and of 

 better machinery. Further reductions in the price of stone 

 can come only from reduced cost of production, and the object 

 of this paper is to offer suggestions that will assist in such a 

 lowering of production cost. The stone industry of Indiana can 

 be developed to a far greater extent than it is today, and the time 

 is at hand for such development. Operators are already con- 

 sidering the installation of electrical equipment and the methods 

 in use are constantly changing. An effort has been made to find 

 out what has proved a success in other places, and by suggestions 

 to help the local operator to avoid the unnecessary expense of 

 experimenting with unsuccessful methods. 



The work of which this study is the result was taken up at the 

 suggestion of Professors Edgar R. Cumings and Joshua W. 

 Beede, of the Department of Geology of Indiana University, 

 and their constant interest and help have contributed very 

 materially to the successful completion of the work. 



The material has necessarily been largely a compilation of 

 facts and suggestions collected from a great number of works, 

 including many articles from the files of the following magazines: 

 Engineering Magazine, Engineering News, Engineering and Mining 

 Journal, Engineering Record, Stone Magazine. To this list should 

 be added a number of papers and articles which have appeared 

 in various other periodicals bearing less directly on this problem. 

 It would be practically impossible to give credit separately to 

 each firm or individual that has assisted in this work with in- 

 formation or material. 



Many papers on quarrying, along various lines of interest, 

 have been written, but to the best of the writer's knowledge no 

 work has as yet attempted to deal with the engineering phases 

 as well as with the geology of the subject, and no work whatever 

 has been written on the engineering features of this district. 



A bibliography classified by general topics is appended to 

 this report. 



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