SIRIUS North Africa tour 1991. Outflow from zinc extraction plant, Ghazaout, Algeria. The zinc is treated in sulphuric acid which is eventually discharged into the sea. The sea, land and atmosph 

SIRIUS North Africa tour 1991. Sampling seabed near zinc extraction plant outflow, Ghazaout, Algeria. The zinc is treated in sulphuric acid which is eventually discharged into the sea. 

SIRIUS off the coast of Tunisia. 

SIRIUS North Africa tour 1991. ASMIDAL phospho-gypsum fertilizer factory in Annaba, Algeria. 

NORTH AFRICA TOUR 91 

SIRIUS North Africa tour 1991. Zinc extraction plant, Ghazaout, Algeria. The zinc is treated in sulphuric acid which is eventually discharged into the sea. The sea, land and atmosphere is pollute 

NORTH AFRICA TOUR 91