scram

scram … Noun. … 2. A scratch. [South Wales use]]

https://books.google.com/books?id=kDVBAQAAMAAJ&pg=PA64 page 64 Many of these old openings still afford places where ore is mined. A man can start in almost anywhere and fine ore. There is a great deal of this "scramming" done at the Jackson. Quite a proportion of the annual product comes in this way. Not unfrequently one of these "scrams" leads to the finding of a large deposit of ore. … https://books.google.com/books?id=kDVBAQAAMAAJ&pg=PA67 page 67 South from the east part of the Incline pit they have a scram of good ore which furnished a small product.