$CHKIF SEC Filings

Filing Filed On
FORM 6-K 26 Jun 2012
FORM 6-K 22 Jun 2012
FORM 6-K 12 Jun 2012
FORM 6-K 11 Jun 2012
FORM 6-K 06 Jun 2012
FORM 6-K 05 Jun 2012
CURRENT REPORT 04 Jun 2012
FORM 6-K 29 May 2012
FORM 6-K 27 Apr 2012
FORM 20-F 27 Apr 2012
FORM 6-K 26 Apr 2012
FORM 6-K 23 Apr 2012
FORM 6-K 13 Apr 2012
FORM 6-K 13 Apr 2012
FORM 6-K 13 Apr 2012
FORM 6-K 30 Mar 2012
6-K 21 Mar 2012
CURRENT REPORT 19 Mar 2012
FORM 6-K 29 Feb 2012
SC 13G 14 Feb 2012