Identify the company from this logo (Odisha based company)

Can You identify the company from this logo ?
All these companies are based & headquartered in Odisha.

Let us see ?

Answers 

In the sequence of appearance from the top.

1. NALCO- (National aluminium Company limited)
2. OMC- (Odisha Mining Corporation)
3. ORTEL
4. OPTCL -( Odisha Power Transmission Corporation Limited)
5. DPCL  -( The Dhamra Port Company Limited)