INDIANAPOLIS, April 16, 2024 /PRNewswire/ -- Calumet Specialty Products Partners, L.P. (NASDAQ: CLMT) (the "Partnership," "Calumet," "we," "our" or "us"), today provided an operational update for the first quarter of 2024. As previously reported, Montana Renewables (MRL) resumed production at its Great Falls, MT, site in December 2023.  The site operated well throughout the first quarter of 2024 as volumes sequentially improved each month.  First quarter results for the MRL business are expected to reflect ...