Subject matches "Piston Corer" or its children

A jumbo piston core is launched.

Piston core attempt resulted in a bent core casing.

Hoisting piston core

Retrieving piston coring tube from deck of Chain

Deck view of Knorr, coring equipment ready at side

Giant piston core on deck of Knorr

Giant piston core over the side of Knorr

Piston core tubing at rail of Knorr

Giant piston core on deck of Knorr

Giant piston core over the side of Knorr.

Giant piston core on deck of Knorr

Three men working with giant piston core

Giant piston core on deck of Knorr

Giant piston core on deck of Knorr

Three men working with piston core on deck of Knorr

Piston core going over the side of Knorr

Giant piston core on deck of Knorr

Giant piston core aboard the Knorr

Giant piston core aboard Knorr

Piston core frame on Knorr