My assumptions are:
(a) the anticipated improvement of the technologies for detecting, sorting, and recovering precious metals and other valuable materials from landfills.
(b) the increasing interest and need for reducing greenhouse gas emissions, worldwide.
(c) the increasing need and interest for improving inadequate diversion of reusable and recoverable municipal solid waste (MSW) materials.
(d) there is a finite amount of precious metals in the world. Due to consumption and the industrial application of some precious metals (i.e. silver), traditional mining, and therefore inventories, will inevitably decline. The demand for metals discarded as MSW will become economically viable.
This idea relates to the processes and practices of extracting and/or removing, from landfills or any other environments designated for the processing, storing, and disposal of municipal solid waste, precious metals including but not limited to gold (Au), silver (Ag), Platinum (Pt), Palladium (Pd), Rhodium (Rh), etc.
Precious metals are generally defined as rare, naturally occurring, metallic chemical elements that are of high economic value. Gold, silver, platinum, palladium, and rhodium (identified on the Periodic Table of the Elements as atomic numbers 79, 47, 78, 46, and 45, respectively) are a few examples.
This idea applies to all landfill mining or similar operations, public and private, when the intent is to recover precious metals or other valuable soil elements due to decades or centuries of decomposing trash, and includes the inadvertent discovery or of such materials during land reclamation or remediation activities that require the use of earth moving equipment/machinery such as excavators, front end loaders, etc. In other words, any process or activity that excavates and processes solid waste and soil materials which have previously been landfilled or stored as the final disposal point.