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8-K
EX-10.1
rgtn127p
6 Jan 15
Entry into a Material Definitive Agreement
12:00am
8-K
EX-10.1
xt9opr
13 Dec 12
Helix Announces Sale of Oil and Gas Subsidiary
12:00am
8-K
EX-1.1
n066x dcnpy6l
7 Mar 12
Entry into a Material Definitive Agreement
12:00am
8-K
EX-10.1
zn7j7cd9b
9 Jun 11
Entry into a Material Definitive Agreement
12:00am
CORRESP
3tz2jss 4nf
13 Dec 10
Correspondence with SEC
12:00am