I have several knives from many different makers both locking and non locking. They are all of the sod or dirt buster style. I always wondered how those two name came about? I know they are well designed work knives, but to a guy who grew up in a city, I never understood why those names were applied to this style of knife? The closest I could come was the cutting of sod for lawns, but I don't feel I am correct. Can anyone tell me how in knife design history those two names came about? thanks all!