Mississippi River oil spill (1962–63)
oil spill in Minnesota
From 1962 to 1963, oil processing plants in Minnesota spilled oil that reached the Mississippi River, causing a major environmental disaster. 3.5 million gallons of crude soybean oil and processed salad oil from the Honeymead Mankato soybean oil processing plant and petroleum from the Richards Oil Plant in Savage spilled into the Blue Earth River and other nearby waterways, eventually diverting into the Mississippi River. It is sometimes referred to as the Richards and Honeymead spills of 1962–63. As of 2002 it was considered the most damaging oil spill in state history.
Mass wildlife deaths and habitat destruction followed the spill. Public outrage about the widespread environmental devastation and inadequate government response to the disaster led to state legislation to protect Minnesota waterways, and eventually the establishment of the Minnesota Pollution Control Agency four years later. Previously no state agency existed to set or enforce rules to preempt environmental disasters and water contamination.
History
In 1962 and 1963, industrial accidents spilled 3.5 million gallons of oil into the Mississippi and Minnesota Rivers. The oil covered the Mississippi River from St. Paul to Lake Pepin, creating an ecological disaster and a demand to control water pollution.
This brief starts where responsible research should: with the source description of “Mississippi River oil spill (1962–63)” as oil spill in Minnesota. Everything that follows is an evidence route, not borrowed authority.
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The subject matters to the general reference register because the source frames it as oil spill in Minnesota. Its deeper value depends on whether names, dates, institutions and citations support that framing.
Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Aug 18, 2025. The linked authority identifier is Q16982113. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1962, 1963 and 2002.
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This entry incorporates text from “Mississippi River oil spill (1962–63)” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.