The material recovery methods used by dust-yards in early 19th century London, England and the conditions that led to their development, success and decline are reported. The overall system developed in response to the market value of constituents of municipal waste, and particularly the high coal ash content of household dust.
Check Also
Grow as you go: ‘Peecycling’ helps plants and compost thrive
Growing healthy plants takes time, care, sunlight, water. And human urine? Link to full article