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- Minimizing the container size for manual material handling. Minimizing the size of the container or using a long-handled tool is recommended so that the worker does not place his breathing zone inside the container (as shown in Figure 3). NIOSH recommends a maximum container depth of 25 inches [NIOSH 1997]. If large containers are required, engineering controls to provide a barrier between the container and the breathing zone of the worker are recommended.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/1/18/Current_Strategies_for_Engineering_Controls_in_Nanomaterial_Production_and_Downstream_Handling_Processes_-_Figure_2.png/400px-Current_Strategies_for_Engineering_Controls_in_Nanomaterial_Production_and_Downstream_Handling_Processes_-_Figure_2.png)
Figure 2. How control measures are selected, implemented, and managed into an occupational safety and health management system. (adopted from [ANSI 2005])
Figure 3. Worker reaching into drum
Current Strategies for Engineering Controls in Nanomaterial Production and Downstream Handling Processes
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