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Walter Tye:

There was no more familiar sight on the Deben, fifty to sixty years ago, than that of the old mud barge, the Kingfisher, leaving the quay. Old Jack Stebbings was the skipper and Ben Page, brother of the Newbourn giant, was his mate. Their favourite place for getting the mud was opposite Whitehall Farm where, so said Jack, “The mud had very little grit in it, and it dug up just like pork lard.” During their twenty-five years of mud­shovelling, they cleared over ten acres. Going out with the ebb tide, they waited, till the bottom was visible, then one loading fore and the other aft, they shovelled up twenty-five tons of mud before the tide returned, taking from three to four hours. Not bad going! They certainly deserved a chunk of bread and cheese and a drink of home-brewed, while, they waited for the “Muddy” to float. Incidentally Jack Stebbings, quiet on water, could be a terror on land and was well known in the local inns for his pugilistic ability.

Dylan Moore (Cementkilns.co.uk):

total lifetime production of 320,000 tonnes clinker = 490,000 tonnes dry raw material. This contains about 112,000 tonnes of dry clay. The Masons history contains very little on the Waldringfield plant.
You are welcome to use the logo.
 
Calculation shows that digging to a depth of about 2 feet 0.6m achieves this result and requires a square area with a side of 322m.
 
tons of mud 112000
SG of mud 2
m3 of mud 62222
depth dug m 0.6
area m2 103704
area acres 26
side of square 322
 
Item Total tons Tons p.a. Source
Years   35  
       
Mud 112000   cementkilns
Lime      
Coke      
Clinker 320000   cementkilns
       
Total Raw materials 490000   cementkilns
       
       
       
Cement 280000 8000 cementkilns
       
       
In & out 770000 22000  
       
Barge load say 100 tons      
Loads p.a.   220  
       
Plus casks and barrels?      
       
>750kg CO2  per ton of cement 210000 6000 https://www.sciencedirect.com/topics/engineering/cement-production
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