{"data":{"id":"us/46-cfr-148.275","jurisdiction":"us","citation":"46 CFR 148.275","heading":"Iron oxide, spent; iron sponge, spent.","body":"(a) Before spent iron oxide or spent iron sponge is loaded in a closed hold, the shipper must give the master a written certification that the material has been cooled and weathered for at least eight weeks.\n(b) Both spent iron oxide and spent iron sponge may be transported on open hold all-steel barges after exposure to air for a period of at least ten days.","path":["Title 46—Shipping","CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY","SUBCHAPTER N—DANGEROUS CARGOES","PART 148—CARRIAGE OF BULK SOLID MATERIALS THAT REQUIRE SPECIAL HANDLING","Subpart E—Special Requirements for Certain Materials"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-46.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:22Z","sha256":"28953f4cc7788f1b73cfe0ab1a172b5205db03e048a551814d2f26fa5fdf22db","source_id":"us-cfr","stale":true,"prev":"us/46-cfr-148.270","next":"us/46-cfr-148.280"},"notice":"GroundRules: Original legal text. Not legal advice."}