Tables from a 1928 study that was started to test the length of time needed to gain efficiency in mica splitting. The weekly average output of 34 experienced operators was used as the standard. Fifty-two inexperienced operators were studied. ...
Box 6, Folder 5
Coming soon
This content is not yet available. Please check back.
OK
QuickView
Display a larger image and more item information when the pointer pauses over a thumbnail
on
off
Layout options:
Thumbnail with title
Grid with smaller thumbnails and more detail
OK
Cancel
Select the collections to add or remove from your search