1994
- MacLellan opens office in Lexington, Kentucky
- MacLellan launches first critical process cleaning OEM contract, Georgetown, Kentucky
1995
- MacLellan launches second critical process cleaning OEM contract, Lafayette, Indiana
1996
- MacLellan launches 1st non-automotive critical process cleaning contract, Anoka, Minnesota
- MacLellan begins critical process cleaning contract, Vance, Alabama
- MacLellan performs project work in aerospace facilities, Auburn & Fredrickson, Washington
1997
- MacLellan begins on-going support of aerospace facility, Portland, Oregon
1999
- MacLellan is awarded critical process cleaning contract in Evart, Michigan
2000
- MacLellan launches first Maintenance & Engineering support contract in Georgetown, Kentucky
2001
- MacLellan becomes a private entity
- MacLellan expands into northern Indiana
2003
- MacLellan is awarded critical process cleaning & maintenance contract, Princeton, Indiana
2004
- MacLellan is awarded first waste water management contract, Vance, Alabama
2005
- MacLellan establishes the MacLellan scholarship for employee’s children to attend college
- MacLellan begins equipment maintenance and chemical management programs in Michigan
2006
- MacLellan acquires Haden India
2007
- MacLellan lands first Canadian contract performing critical process cleaning in Delta, British Columbia
2008
- MacLellan awarded critical process cleaning and maintenance contract, San Antonio, Texas
2010
- MacLellan launches first facilities management contract
2011
- MacLellan is awarded critical process cleaning contract, Blue Springs, Mississippi
- MacLellan is awarded 5 new contracts
- MacLellan launches operations in state of Tennessee
2012
- MacLellan is awarded new business with fascia supplier in Evansville, Indiana
- MacLellan begins operations in Georgia
2013
- MacLellan achieves 2 million hours with ‘no lost day injury’
2014
- MacLellan launches business in transmission facility in Tipton, Indiana
- MacLellan launches HVAC & Mechanical Services, Decatur, Alabama
- MacLellan launches 1st contract with recreational vehicle customer, Spirit Lake, Iowa
- MacLellan launches 1st contract with furniture industry customer, Grand Rapids, Michigan
2015
- MacLellan is awarded critical process cleaning contract in Cambridge, Ontario, Canada
- MacLellan launches contract in Newbern, Tennessee
- MacLellan launches HVAC & Mechanical Services, Indianapolis, Indiana
- MacLellan opens business center in Franklin, Tennessee
2016
- MacLellan expands in Lafayette, Indiana to provide industrial waste water management
- MacLellan launches new operations in Jackson, TN providing machine cleaning services
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