12 Miss. Code. R. 3-20-800.27
Any Proposal may be withdrawn prior to the time specified for receiving bids. If, however, when all Proposals have been read and recorded, should a Bidder realize a mistake has been made in the Proposal and desires to withdraw the Proposal, the Bidder should rise and announce to all present of the intention of withdrawing the Proposal. All withdrawal requests, after being verbally made, must be made in writing to the Bureau no later than twenty-four (24) hours following the bid opening. [Mississippi Supreme Court decision, Mississippi State Building Commission et al v. Becknell Construction, Inc. et al, 329 So.2nd 57 (1976)]
The letter of withdrawal should be addressed to the Bureau of Building, Grounds and Real Property Management's Director. It should identify the Project, include the original bid, take-off sheets, and any other supporting documentation to provide proof of error. Failure to include sufficient documentation will be grounds for rejection of the withdrawal request.
12 Miss. Code. R. 3-20-800.27