I think the tool is a soil scarifier/weeder or perhaps a dutch hoe.
Not sure there are any women; I think they are men with protective clothing against insects/scratches, with belts to hold their buckets while they pick berries.
Or maybe they're for doing something else altogether. 
And, sorry, but I see the "lattice" as damage in the photo - but with a picture like this it is very hard to distinguish between detail and damage.
Cheers,
Peter
Hi Peter
I have uploaded the 121 meg TIF version to dropbox if anyone is interested
https://www.dropbox.com/s/48n4ag4q2l0288y/Image%201.tif?dl=0It looks like the photo for some reason may have had a plastic film wrapped around it to protect it presumably, cling film maybe? Very odd, but I have emailed my friend to see if we can get a better image minus any plastic and in landscape mode if possible as I think any plastic wrapping may have reflected a flash possibly limiting some aspects of the image, and without it may bring out more detail.
I'm also waiting for what he knows about the image, If I can get a family name or a location of the photo then I could narrow down a lot of questions, or god forbid a name of one of the people in the photo that would really help

I'm also curious about the chap on the far right. Why would a fruit picker (Orchard or otherwise) need a spade? An orchard worker would have cut things down rather than dig them up surely?
Have you any theories on dates here Peter. I think the tools will be the best clue as scarifiers, fagging sticks etc would have been in popular use in a certain time frame?