The "radio mast" is intriguing as at this period, broadcast radio and any private radio use, which, if it existed would have been exceptionally rare, would have been at fairly long wavelengths, normally requiring two masts with a horizontal aerial slung between the two. Even today, most medium wave transmitters require a pair of masts as the aerial itself has to be physically long in order to be efficient. VHF was not in use at that time. Of course, the date given could be wrong... There are telegraph poles to the right of the complex and at this time, electricity usage would have been relatively light with most processes being steam operated. There seems to be road access, but also, of course, the railway.
The line I mentioned did serve the brickworks but I'm pretty certain this shot is not there as the whole layout is wrong and Drighlington was even then on the junction of two major roads - the A650 and A62.
Oddiesjack. The other vent, which I also missed at first, is above and slightly to the right of the one you've identified. On the picture, it appears in front of what I think is a viaduct with, at that end, a road going through the first arch.
I suspect when someone does identify this, it'll be quite obvious. Driving me potty now - cheers Tiny!