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		| Paper: | 
		Infrared Dark Clouds Toward W51 | 
	 
	
		| Volume: | 
		287, Galactic Star Formation Across the Stellar Mass Spectrum | 
	 
	
		| Page: | 
		252 | 
	 
	
		| Authors: | 
		Shipman, R. F.; Frieswijk, W.; Helmich, F. P. | 
	 
	
	
		| Abstract: | 
		We present the status of an on-going investigation into the nature of two Infrared Dark Clouds observed towards W51. In particular, we discuss recent JCMT line observations and present initial results of a near infrared extinction study to determine the density structure of the cores. | 
	 
	
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