The given diagrams describe how frozen fish pies are manufactured.
Overall, the manufacturing of frozen fish pies is a multistep process, which is done by specialized equipment along with human workers. The two main ingredients for this product are fresh salmon and raw potatoes.
The first processing line in a frozen fish pies manufacturing facility is for potatoes. This line is fed raw potatoes, which could take up to one month to be delivered. The raw potatoes are then cleaned, peeled, and sliced in preparation for cooking. After that, the sliced potatoes are then cooked in boiling water and left to cool down afterwards. With that we have the cooked potatoes ready to be added to the rest of the meal.
The second line is for processing salmon and combining the ingredients. This line starts with a batch of fresh salmon which takes less than 12 hours to be delivered. Then, the salmon is cooked in a steam oven, and the skin and bones are removed by workers. Peas and sauce are then added to the salmon after it gets inspected. Potatoes are added next, and with that we have the full meal ready to be frozen and shipped to the stores. 
The  
given
 diagrams  
describe
 how  
frozen
 fish pies  
are manufactured
. 
Overall
, the manufacturing of  
frozen
 fish pies is a multistep process, which  
is done
 by specialized equipment along with human workers. The two main ingredients for this product are fresh salmon and raw potatoes.
The  
first
 processing  
line
 in a  
frozen
 fish pies manufacturing facility is for  
potatoes
. This  
line
  is fed
 raw  
potatoes
, which could take up to one month to  
be delivered
. The raw  
potatoes
 are then cleaned, peeled, and sliced in preparation for cooking. After that, the sliced  
potatoes
 are then cooked in boiling water and  
left
 to cool down afterwards. With that we have the cooked  
potatoes
 ready to be  
added
 to the rest of the meal.
The second  
line
 is for processing salmon and combining the ingredients. This  
line
  starts
 with a batch of fresh salmon which takes less than 12 hours to  
be delivered
. Then, the salmon  
is cooked
 in a steam oven, and the skin and bones  
are removed
 by workers. Peas and sauce are then  
added
 to the salmon after it  
gets
 inspected.  
Potatoes
 are  
added
  next
, and with that we have the full meal ready to be  
frozen
 and shipped to the stores.