$MAT SEC Filings

Filing Filed On
PRIMARY DOCUMENT 14 May 2012
PRIMARY DOCUMENT 14 May 2012
PRIMARY DOCUMENT 14 May 2012
PRIMARY DOCUMENT 14 May 2012
PRIMARY DOCUMENT 14 May 2012
CORRESP 30 Apr 2012
FORM 10-Q 25 Apr 2012
FORM 8-K 16 Apr 2012
UPLOAD 16 Apr 2012
PRIMARY DOCUMENT 03 Apr 2012
PRIMARY DOCUMENT 03 Apr 2012
DEFINITIVE PROXY STATEMENT 28 Mar 2012
DEFINITIVE ADDITIONAL MATERIALS 28 Mar 2012
AUTO-GENERATED PAPER DOCUMENT 28 Mar 2012
PRIMARY DOCUMENT 27 Mar 2012
PRIMARY DOCUMENT 16 Mar 2012
PRIMARY DOCUMENT 16 Mar 2012
FORM 8-K 14 Mar 2012
FORM 8-K 02 Mar 2012
PRIMARY DOCUMENT 29 Feb 2012