"Navvy" may have its origin on the waterways, but the term has come to be more generic of unskilled laborers who worked on canals, roads, railroads etc. Gordon LIghtfoots's "Canadian Railway Trilogy" has the line : "We are the navvies who worked upon the railway, bending our backs in the hot morning sun"

For another take on hogeye, go here: http://www.elgintx.com/hogeye/

St. Paul, Minnesota was originally called "Pig's Eye"

rich r