Thinwalled opentube samplers (Type OST/W ...
Thinwalled opentube samplers (Type OST/W) COMMENTARY ON Thinwalled samplers consist of a steel tube whose lower end is shaped to form a cutting edge. A typical thinwalled sampler is illustrated in Figure 2. An alternative thinwalled sampler incorporates a separate cutting shoe (and an optional core cher); this sampler, see Gosling and Baldwin, 2010 [29],