The Bulletin of the Department of Labor
shall be so arranged that the closing of the interlock, electric contact or other approved device is dependent upon the closing ... (f) Manually operated hinged or swinging hoistway gates or doors hereafter installed shall be provided with an .... General (i) Where it is possible to unlock any gate or door by reaching the lock or latch from the outside, such lock or lateh shall be covered by an approved guard.
| Title | : | The Bulletin of the Department of Labor |
| Author | : | |
| Publisher | : | - 1918 |
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