![... Gas Cylinders Not Properly Secured - University of Maryland, Baltimore ... Gas Cylinders Not Properly Secured - University of Maryland, Baltimore](http://www.umaryland.edu/media/umb/af/ehs/lab-audits/compressed-gas-cylinder/IMG_0082sm.jpg)
An oil refinery or petroleum refinery is an industrial plant the place crude oil is made into useful petroleum products by distillation and different processs.
An oil refinery or petroleum refinery is an industrial plant the place crude oil is made into useful petroleum products by distillation and different processs.