We are endeavoring to better understand the barriers to safe work environments and implementation of a safety program on film productions.
In this example, does "implementation of a safety program on film production" mean:
implementation of (a safety program on film production)
which means implementation of a program, and this program is safety program about film production
or
(implementation) of (a safety program) on (film production)
which means implement a program to film production, and this program is a safety program
I read this from an email.