Prime Minister Julia Gillard and Premier Lara Giddings need to make good their word that logging would cease after 7th August in 430,000 hectares of high-conservation value forest in Tasmania.

"The ongoing logging which the Prime Minister said would stop has not stopped. Further areas are now being logged. The logging makes a mockery of the Prime Minister and the Premier of Tasmania's signatures on the agreement on 7th August this year that it would stop," Senator Brown said in Hobart today.

"It's continued unabated. Money is pouring into the industry from federal coffers but the destruction of these grand forests which the Prime Minister said would stop goes on. The industry can't be allowed to get away with that, and prime ministerial authority is needed to make good her word that these forests would be protected."

"We have a serious dispute with Prime Minister Gillard over this matter. I cannot understand how she can allow her word to be clear-felled in this way."