Gas Supply and Marketing
Cheryl Hartsell
Phone:  (405) 844-6240
Fax:  (405) 844-6220
Email:  chartsell@unimarkllc.com

Accounting
Fred Thorwart
Phone:  (405) 285-8791
Fax:  (405) 844-6280
Email:  fthorwart@unimarkllc.com

Contract Administration
Stephen Burshek
Phone:  (405) 285-8792
Fax:  (405) 844-6220
Email:  sburshek@unimarkllc.com

Division Orders
Cathy Thomas
Phone:  (405) 285-8711
Fax:  (405) 844-6220
Email:  cthomas@unimarkllc.com

Gas Control
Diana McLeod
Phone:  (405) 285-8671
Fax:  (405) 844-6220
Email:  dmcleod@unimarkllc.com