{"abstract":"The U.S. Fish and Wildlife Service (Service or we) amends 50 CFR 20.21(j) to grant final approval of tungsten-matrix shot as nontoxic for hunting waterfowl and coots. Acute toxicity studies reveal no adverse effects over a 30-day period on mallards (Anas platyrhynchos) dosed with tungsten-matrix shot. Reproductive/chronic toxicity testing over a 150-day period indicated that tungsten-matrix administered to adult mallards did not adversely affect them or the offspring they produced. We also remove 50 CFR Subpart M (Part 20-- Migratory Bird Hunting)--Criteria and Schedule for Implementing Nontoxic Shot Zones for the 1987-88 and Subsequent Waterfowl Hunting Season because implementation of nontoxic shot zones in the United States was completed in 1991.","action":"Final rule.","agencies":[{"raw_name":"DEPARTMENT OF THE INTERIOR","name":"Interior Department","id":253,"url":"https://www.federalregister.gov/agencies/interior-department","json_url":"https://www.federalregister.gov/api/v1/agencies/253","parent_id":null,"slug":"interior-department"},{"raw_name":"Fish and Wildlife Service","name":"Fish and Wildlife Service","id":197,"url":"https://www.federalregister.gov/agencies/fish-and-wildlife-service","json_url":"https://www.federalregister.gov/api/v1/agencies/197","parent_id":253,"slug":"fish-and-wildlife-service"}],"body_html_url":"https://www.federalregister.gov/documents/full_text/html/2000/09/06/00-22721.html","cfr_references":[{"chapter":null,"citation_url":null,"part":20,"title":50}],"citation":"65 FR 53936","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"This rule takes effect September 6, 2000.","disposition_notes":null,"docket_ids":[],"dockets":[],"document_number":"00-22721","effective_on":"2000-09-06","end_page":53940,"executive_order_notes":null,"executive_order_number":null,"explanation":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2000/09/06/00-22721.xml","html_url":"https://www.federalregister.gov/documents/2000/09/06/00-22721/migratory-bird-hunting-approval-of-tungsten-matrix-shot-as-nontoxic-for-hunting-waterfowl-and-coots","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/00-22721?publication_date=2000-09-06","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2000-09-06/00-22721/mods.xml","not_received_for_publication":null,"page_length":5,"page_views":{"count":51,"last_updated":"2026-04-05 00:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2000-09-06/pdf/00-22721.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":null,"publication_date":"2000-09-06","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2000/09/06/00-22721.txt","regulation_id_number_info":{"1018-AG22":null},"regulation_id_numbers":["1018-AG22"],"regulations_dot_gov_info":{},"regulations_dot_gov_url":null,"significant":null,"signing_date":null,"start_page":53936,"subtype":null,"title":"Migratory Bird Hunting; Approval of Tungsten-Matrix Shot as Nontoxic for Hunting Waterfowl and Coots","toc_doc":"Tungsten-matrix shot; approval as non-toxic shot material for waterfowl and coot hunting","toc_subject":"Migratory bird hunting:","topics":["Exports","Hunting","Imports","Reporting and recordkeeping requirements","Transportation","Wildlife"],"type":"Rule","volume":65}