What might "Field worker" mean, for Triplex Foundary

[Mark_Ellis]

Triplex Foundry of Toll end, and later of Upper Church Lane started life a Horrell and Bowman - Builders and Builders merchants, also ironmongers.
They made a Field kitchen for the army, which remained in service up to the 1990s - hence my interest. It's the one in the foreground, with oven and low cooking hobs on the side of it.



The National Archive have a document
Field workers. Triplex Foundry Ltd., Great Bridge, Staffs - https://discovery.nationalarchives.gov.uk/details/r/C2186857

My understanding of Field workers is agricultural workers. To save me £8.40, I wondered what anyone else thinks Field workers means with regards to an iron foundry, please?

 

[pjmburns]

I don't know in this context but I thought a Field worker simply meant someone who wasn't desk bound

 

[pjmburns]

A "Google" search suggests they are the people working the furnaces rather than being office based.

 

[Mark_Ellis]

I wondered if it's not just bad cataloguing, as in its former catalogue location there are only 2 entries. The second being Portable stoves by Turley & Williams, and R and A G Crossland.
I've sent an email to National Archive.