Utilizing compressed air for cleaning up around machinery and even removing dirt from personnel clothing by blowing is still prevalent around the world. If you “must” blow then you should at least keep the dead end pressure of the air lance exit under 30 PSI, preferably utilizing air amplification nozzles (click here).
The “better way” is to vacuum using a venture system such as an X-stream Hand Vac as illustrated above. This particular unit is actually reversible and can be both a blow gun and a vacuum gun. On the vacuum end you can attach either a bag to collect dirt or a hose to convey it to a container. These compressed air operated units are quite compact and portable as well as durable and low cost and ideal to use in a factory environment.
But regardless of the vacuum method used, it is better to avoid blowing when cleaning up.