When pigs were kept in back yard

Dear Sir, — What a great idea the food waste bins are, all your veggie scraps made into compost that can be given, or sold back to, local gardeners and farmers.
During the war and for years just after, some terraced houses in the town were allowed to keep a porky in the back yard, providing they joined the pig club. I’m not sure how it worked, but it did. 
People in adjoining houses would bring all their food scraps to whoever had the pig club approval to raise a pig. 
Sanitation was always a problem and the yard was inspected now and then. 
When the pig was terminated the proceeds were split among the neighbours, depending on how much you had contributed to the feeding. 
The only part of a pig that you cannot eat is the squeal so at the time it was a great idea, as it helped to feed local people. 
It certainly wouldn’t work today. Some people got the tail, ear or a trotter but all were edible.
Health and safety kicked in and stopped it, not only for having pigs in back yards but also for the waste food being fed to them. All the waste food then went into landfill which produced methane gas at the tip. (Bang!)
I used to work for a company here in Ontario that would collect all the waste food from many restaurants in and around Toronto. It was then transported to a pig farm to feed to the livestock. 
The owner had a farm that was equipped with a cooking unit, as the waste food had to be processed at a high temperature. 
Regular inspections took place from the appropriate ministry. This process no longer takes place: all the waste food is now transported to a cooking plant and processed in a matter of a few weeks. Normal natural composting would take at least a couple of years.
The processed waste is then sold to farms as fertilizer and some of it is given to local households for the growing of garden plants etc.
I am not sure how the economics of this works, but I am sure it is all paid for from the increases that takes place with regard to our home taxes/rates.
I am looking forward to hearing how it is going to be received in Congleton.
I bet the flower baskets and roundabouts in town will be fantastic …. or there will be an invasion of Triffids. — Yours faithfully,