How Low Frequency pu panel Dewatering Can Help Miners Achieve Maximum Efficiency: A Look at the Benefits of mining sieve Panel Use After Effects. Mining operations require a great deal of efficiency and productivity in order to be successful. One way to achieve this is through the use of low frequency PU panel dewatering, which is a process that uses a sieve panel to separate solids from liquids. This article will discuss the benefits of using this process in mining operations, as well as the after effects of using a sieve panel. We will also look at how this process can help miners achieve maximum efficiency and productivity