US SB243

Extends the Radiation Exposure Compensation Act claims filing period by 6 years and increases compensation amounts to $100,000 for downwinders and uranium workers who developed cancer or respiratory diseases from nuclear testing or mining activities

Expands geographic eligibility for "downwinder" claims to include Arizona, Colorado, Idaho, Montana, Nevada, New Mexico, Utah, and Guam, and extends the covered exposure period through November 6, 1962

Creates new compensation for individuals exposed to Manhattan Project waste in designated ZIP codes in Missouri, Tennessee, Alaska, and Kentucky, providing $50,000 minimum for living claimants or $25,000 for surviving spouses/children

Extends uranium mining worker eligibility through December 31, 1990 (previously 1971), adds core drillers and remediation workers to covered occupations, and includes renal cancer and kidney disease as compensable conditions

Allows previously denied claimants to resubmit claims up to three times and permits prior recipients to request additional compensation reflecting the increased payment amounts under the amended law