GTM CHINA - The Hudson Group has a long history and experience in mining and quarrying in Australia and overseas. This experience ranges from small scale gravel screening through to turn key gold processing plants through to high production ore crushing plants. Gordon Subloo has a long standing history in mining and quarrying world wide, providing consulting services to numerous mining and quarrying companies and acting as consultant for CitiBank regarding mining and quarrying investments in Australiasia in the 1980's to 1990's.