For example, the job analysts may tour the job site and observe\\ the tour the analyst may collect materials that directly or indirectly indicate required skills (duty statements, instructions, safety manuals, quality charts, etc).
The job analysts may tour the job site. This is for example. The job analysts may observe\\ the tour (duty statements etc). This is for example. The analyst may collect materials the tour. These materials directly or indirectly indicate required skills. Duty statements are instructions quality charts. Instructions are duty statements. Instructions are safety manuals.