"dumping at sea"

means—

(a)	any deliberate disposal into the sea of any waste or material other than operalional waste from a vessel, aircraft, platform or other man-made structure at sea;

(b)	any deliberate disposal into the sea of a vessel, aircraft, platform or other man-made structure at sea;

(c)	any storage of any waste or other material on or in the seabed, its subsoil or substrata: or

(d)	any abandonment or toppling at site of a platform or other structure at sea, for the sole purpose of deliberate disposal, but "dumping at sea" does not include—

(i)	the lawful disposal at sea through sea out-fall pipelines of any waste or other material generated on land;

(ii)	the lawful depositing of any substance or placing or abandoning of anything in the sea for a purpose other than mere disposal of it; or

(iii)

disposing of or storing in the sea any tailings or other material from the bed or subsoil of coastal waters generated by the lawful exploration, exploitation and associated off-shore processing of mineral resources from the bed, subsoil or substrata of the sea;