# Migratory Bird Hunting; Extension of Temporary Approval of Tungsten-Iron Shot as Nontoxic for the 1998-99 Season
> **US Fish and Wildlife Service** · Final rule. · Published 1998-10-07 · Effective 1998-10-07 · 63 FR 54016
## Document
- **Document number:** 98-26856
- **Category:** migratory-bird
- **Sub-agency:** US Fish and Wildlife Service
- **Federal Register citation:** 63 FR 54016
- **CFR reference:** 50 CFR 20
- **Publication date:** 1998-10-07
- **Effective date:** 1998-10-07
## Abstract

The U.S. Fish and Wildlife Service (Service) amends Section 20.21(j) to grant temporary approval of tungsten-iron shot as nontoxic for the 1998-99 migratory bird hunting season, except in the Yukon- Kuskokwim (Y-K) Delta region, Alaska. The Service had previously granted temporary approval of tungsten-iron shot as nontoxic for the 1997-98 season. The toxicological report, which is an extensive literature search and analysis of tungsten and tungsten-iron, suggests that these compounds are nontoxic under assumed use and in the environment. Analysis of the toxicity study reveal no adverse effects over a 30-day period when dosing mallards (Anas platyrhynchos) with 8 BB size tungsten-iron shot.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1998/10/07/98-26856/migratory-bird-hunting-extension-of-temporary-approval-of-tungsten-iron-shot-as-nontoxic-for-the)
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