Form SC 13D/A LAYNE CHRISTENSEN CO Filed by: GAMCO INVESTORS, INC. ET AL Jun 15, 2018 04:48PM
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Form SC 13D/A LAYNE CHRISTENSEN CO Filed by: GAMCO INVESTORS, INC. ET AL Jun 3, 2015 05:16PM
Form SC 13D/A LAYNE CHRISTENSEN CO Filed by: GAMCO INVESTORS, INC. ET AL Feb 10, 2015 11:42AM


Oct 2, 2014 01:35PM Form SC 13D/A LAYNE CHRISTENSEN CO Filed by: GAMCO INVESTORS, INC. ET AL
Sep 22, 2014 04:20PM Form SC 13D/A LAYNE CHRISTENSEN CO Filed by: GAMCO INVESTORS, INC. ET AL