HQ shortened 42% at 800°C, 10-6/sec and 1200 MPa, in the intermediate temperature dislocation creep regime (regime 2 of H & T). Temperature is high enough for dislocation climb to serve as the recovery process. Original grains have been fairly homogeneously flattened, and exhibit smooth and continuous undulatory extinction; sub-basal deformation lamellae are quite common. Recrystallized grains form at original grain boundaries as a result of progressive subgrain misorientation. In this regime the subgrains and the recrystallized grains have about the same size, but both are too fine to resolve optically in this section. W339 x 10.