0
Refined Petroleum (6.3%)
Cars (3.5%)
Packaged Medicaments (2.5%)
Vehicle Parts (2.4%)
Planes, Helicopters, and/or Spacecraft (2.3%)
PHI stands for Protected Health Information or Public Health Institute. It also stands for Petroleum Helicopters Inc. and Population Health Impact.
They fly helicopters.
Helicopters are machines, they can not grow.
Helicopters are about 200 feet