The federal government said two illegal mining companies have taken out minerals worth over N100 billion in the past few years.
The two firms are Solid Unit Limited and Geotess Nigeria Limited.
The companies were shut down in Zurak, Wase Local Government Area of Plateau State last month due to illegal mining activities.
The Minister of Mines and Steel Development, Kayode Fayemi, said the huge scale of illegal mining by the two companies is tantamount to economic terrorism.
He added that government is determined to confront anyone or group that is out to sabotage the economy through illegal mining and other means.