{"thcode":2,"term":{"code":1293,"name":"waste treatment and disposal","parent":548,"scope":"The chemical and physical methods to recycle or dispose of materials which, without treatment, are deemed to have no further value or are too contaminated to be used."},"uf":[{"name":"nuclear waste repositories","usewith":false},{"name":"radioactive waste repositories","usewith":false},{"name":"sewage disposal","usewith":false},{"name":"waste repositories","usewith":false},{"name":"waste treatment","usewith":false},{"name":"wastewater treatment","usewith":false}],"bt":[{"code":548,"name":"human impacts","parent":1174,"scope":"The effects, intentional or unintentional, beneficial or harmful, direct or indirect, which human activities have upon the environment and living things."},{"code":1174,"name":"topics","parent":1,"scope":"Themes, subjects, and concerns for which USGS information resources are relevant."},{"code":1,"name":"Categories","parent":null,"scope":"Thematic terms for categorizing information resources.  This thesaurus is intended to support finding and understanding scientific information."}],"nt":[],"rt":[{"code":2273,"name":"coal ash","parent":2271,"scope":"Solid waste material remaining from the burning of coal."},{"code":769,"name":"contamination and pollution","parent":1174,"scope":"Introduction of harmful substances into the environment by human action or natural processes."},{"code":311,"name":"ecology","parent":650,"scope":"Study of the relations between living plants and animals and their environment."},{"code":1998,"name":"mine waste","parent":1199,"scope":"Earth materials removed during mining and concentrated in piles or beds, typically near the site of extraction.  Tailings are mine waste that has been processed to remove valuable components; unprocessed mine waste includes overburden removed to reach commodity materials such as ore or coal."},{"code":750,"name":"mining hazards","parent":548,"scope":"Dangerous conditions which result from the extraction of naturally occurring mineral deposits.  Includes tunnel collapses, fires, and explosions."},{"code":2272,"name":"slag","parent":2271,"scope":"Solid waste material produced by the industrial processing of ore materials."},{"code":1075,"name":"social sciences","parent":1019,"scope":"Sciences concerned with the structure and interrelationships of human societies, human institutions and organizations, and human culture over time."},{"code":2271,"name":"solid industrial waste material","parent":1199,"scope":"Waste solid materials produced by industrial processing of earth materials, not simply material extracted in the search for ores."},{"code":1295,"name":"wastewater discharge","parent":1311,"scope":"Water that is returned or reused after release from a wastewater treatment plant."}]}