Sustainable Green Team Ltd. (SGTM)

[nunaka]

Charlie, Impellers are not difficult to change out and anyone who is half lucid would carry a basic load of spare parts for high wear items. (I'm sure they do) Pressure gauges, flow meters,etc. alert operators to developing problems. Biggest hassle with a dredge is plugging the pipe/hose with rocks. There is usually a classifying grate over the mouth of the hose to prevent this. The biggest challenge is keeping trommels and anything that vibrates or rotates in one piece...much more maintenance intensive than the dredges. Very hard on welds,shafts, seals, bearings and bushings. Self destruct was replaced by the word "on" to save 10 letters and a space.