7mm Iron Ore wagons

[rope runner]

Yes, but even a secondary blasting is going to leave a very irregular lump size, some of which will be ‘large’, which is, of course, a relative term.  Large enough to cause blockages in bottom discharge wagons.

 

Here’s a quote from the December 1952 Iron & Coal Trades Review, ‘Iron Ore Wagons’ by Brisby and Davis, of the British Iron & Steel Research Association.

 

“(of hopper wagons and tipplers).  There is much to be said for both methods......(the choice) depends largely on local conditions and especially on the types of ore used.”

“When ores are dry and regular in size, which is often the case with imported ores, bottom discharge presents definite advantages, as it is faster than tippling.”

“The advantages.....are much reduced if the works takes in ‘home’ ores, which sometimes have very large lumps, are often sticky, and will not run out when the doors are released.”

“In the last few years, the tendency in the country has been to install tipplers largely because .....all two axle wagons can be tipped.”

 

There’s a considerable difference in the loaded product between blasting and loading the ore (most home ores), and crushing and screening it down to a maximum size (imported ores).

 

It which case it was probably a balance between the speed of unloading the hopper wagons, against the time taken to remove any "blockages".

 

I don't think oversize was a considerable problem on many systems, for example at Wroxton the ore was loaded into the crusher by dump cars, the doors of which are not much bigger than the discharge doors on a hopper.

 

anyway, back on topic:

 

Below is a picture of a pair of hoppers, modified with welded steel sections to allow them to be tipped (note the horizontal steel piece.

The two outer supports of this strip were also added to allow this.

 

These are actually internal users (at Scunthorpe?), and can be told apart from the BR licensed wagons by their "greedy boards" (added metal plate arround their tops to increase loading capacity)

 

can be viewed here: http://www.flickr.com/photos/schoman2/5755194873/in/pool-uk-steel-industry-railways

 

Paul A. 

[Arthur]

I don't think oversize was a considerable problem on many systems,

 

These are actually internal users (at Scunthorpe?),

 

can be viewed here: http://www.flickr.com/photos/schoman2/5755194873/in/pool-uk-steel-industry-railways

 

Paul A.

 

Seriously Paul , I don't see how you can make that statement when it was identified as a problem in an article on ore wagons in the leading trade journal of the day. It's unequivocal, home ores sometimes contained large lumps, they stuck in hoppers, it was a problem.

 

Anyway,

 

Yes, that photo is at United Steels, Appleby Frodingham works, at Scunthorpe,