%0 Journal Article
%T Importance of Falling Ground, Rock, and Coal As an Accident Cause
%J Transactions of the American Institute of Mining and Metallurgical Engineers
%D 1943
%A Boardman, JL
%V 153
%N 
%P 258-265
%X [Abstract unavailable]  <p>Language: en</p>
%G en
%I American Institute of Mining, Metallurgical, and Petroleum Engineers
%@ 0096-4778
%U http://dx.doi.org/