Huge quantities of gypsum and chemical fertilisers have been added to the waters of the Marcal and Raba rivers.

BBC: Toxic sludge carpets homes in Hungary

Plaster has been poured into the Marcal river in a bid to bind the sludge and stop further flooding.

BBC: 'One year' to clean toxic spill in Hungary

Gypsum was being dropped into the Marcal river from helicopters to neutralise it.

BBC: Hungary sludge death toll rises after two bodies found

All life in the Marcal river, which feeds the Danube, has been "extinguished".

BBC: Hungary sludge death toll rises after two bodies found

In our corner of the supermarket, enhanced versions of Marcal Small Steps bath tissue and paper towels are hitting shelves now.

FORBES: CMO Network

An alert has been declared for the Marcal and Torna rivers, and Mr Illes said workers were "desperately" trying to stop contamination of the Raba and Danube rivers.

BBC: 'One year' to clean toxic spill in Hungary

Especially the green marketer in me: I'm a chief marketing officer at Marcal, the segment leader in bath tissue, paper towels and other paper goods made from 100% recycled paper.

FORBES: Magazine Article

"The Marcal river is dead, " said Tibor Dobson, spokesman of the Hungarian Disaster Management Agency - a reference to a smaller river which flows north from the disaster area towards the Danube.

BBC: Toxic sludge carpets homes in Hungary