How many water voles did they kill off? 

The old Somerset Rivers Board at work 

Came on some 35mm negatives never printed while scanning to JPG's.

I made me wonder how many miles of rhines and sub-rhines the board worked like this.

What chance did the water vole population have against a drag line.

Also made me wonder if the Environment Agency still use the same system.

If they do - Good-bye water voles, - just another wild life that mankind has wiped out.

This pic shows clearly the difference of 'before' and 'after'.
In the old days a crew would work along a river or rhine bed slubbing out. Now it is all machine done. A machine has no conscience but the men who empower the use of them should have.