Sampling Probe for Monitoring Changes in Storage Piles of Wood and Bark Particles

A conical bucket auger device is described. It can be used to remove samples from within storage piles of wood or bark particles in order to continuously monitor the effects of storage on material properties. The two and one-half inch diameter bucket is well suited to sampling in piles of various-sized particles from sawdust and whole tree chips to unhogged bark. Piles have been probed manually to 20 foot depths. The effectiveness of the auger is demonstrated in an example of monitoring the effects of storage times on moisture content gradients in a pile of hardwood whole tree chips. After two and ten months storage, moisture content decreased from 73 percent (dry basis) to about 40 percent and 22 percent, respectively.

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