When ice is crushed in a brittle manner as in most strength tests we assume that elasticity, fracture energy and sample size governs the result. For porous ice measured uniaxial strength was reduced due to the average size of the air bubbles and the assumed pre-existing cracks. The strength of porous granular ice was calculated from measured bulk density and earlier measured fracture toughness on pure ice. In general, a falling trend was traced as predicted with the presented formula although the scatter of the field data was large. Ice strength obtained from pressure-meter tests was comparable with those from the uniaxial compression tests when they were carried out shortly after sampling. The crystal analysis was supported with a video-camera which made it faster