expert witnesses
Heating Ventilating Air / HVAC Expert Witnesses: 8
Mechanical Engineering Expert Witness Randy Clarksean
344 2nd St., SE
Perham MN
56573
USA
phone: randy.clarksean@gmail.com
![randy-clarksean-mechanical-engineering-expert-photo.jpg](/Content/images/members/randy-clarksean-mechanical-engineering-expert-photo.jpg)
Mechanical Engineering Expert Witness Michael Pollock
Michael A. Pollock, PE, USPTO
405 Barbara Lane
Bryn Mawr PA
19010
USA
phone: 610-955-4811
![cogent-experts-logo.png](/Content/images/members/cogent-experts-logo.png)
Mechanical Engineering Plumbing Expert Witness Roger Griffith
Mechanical Engineer
PO Box 702
Jefferson City TN
37760
USA
phone: 865-471-8142
![Roger-Griffith-Mechanical-Plumbing-Expert-Photo.jpg](/Content/images/members/Roger-Griffith-Mechanical-Plumbing-Expert-Photo.jpg)
Building Systems Engineering Expert John Hatcher
John Hatcher, PE, MBA, CPP, BCxP, CHSIII, LEED AP
President
5010 Wright Road Suite 150
Stafford TX
77477
USA
fax: 832-944-6021
Construction Defect Expert Witness Andrew Allocco
Andrew Allocco, PE
President/Owner
23061 SW Accesi Way
Port Saint Lucie FL
34986
USA
phone: 772-388-3188
![andrew-allocco-construction-defect-expert-photo.jpg](/Content/images/members/andrew-allocco-construction-defect-expert-photo.jpg)
Plumbing Forensic Engineering Expert Witness David Shreve
David G. Shreve, PE
Senior Consultant
8330 Juniper Creek Lane
San Diego CA
92126
USA
phone: 858-587-2874
![Ivey-Engineering-logo.gif](/Content/images/members/Ivey-Engineering-logo.gif)
Legionella Expert Tim Keane
Tim Keane
Consultant
31 Marian Circle
Chalfont PA
18914
USA
phone: 215-996-1805
fax: 775-542-4560
![Tim-Keane-Legionella-Expert-Photo.jpg](/Content/images/members/Tim-Keane-Legionella-Expert-Photo.jpg)
Occupational Hygiene Expert Witness Nancy McClellan
Nancy M. McClellan, MPH, CIH, CHMM
Industrial Hygiene Expert & Principal Consultant
56439 Nickelby Drive S.
Shelby Township MI
48316
USA
phone: 224-517-2990
![occupational-health-management-logo.jpg](/Content/images/members/occupational-health-management-logo.jpg)
Featured resources
by Carl Sheeler, PhD
by Nancy M. Major, MD, et al
by H. Michael Mogil, et al