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Classifiers or Grizzlies
There are diverse kinds of classifiers when it comes to prospecting, as a matter a fact, any type of tool or device can be used as a classifier. In the mining trade this is more frequently known as a grizzly. To the common miner grizzlies just consist of a screen that takes care of sorting out larger pieces of rocks in order for only the finer sand and gravel is able to get to the sluice. A grizzly can consist of simple iron straps placed from a quarter to a half an inch apart. One that is well known of and used is one that just consists of holes drilled on a piece of eighteen-inch steel. There are also commercial screen that are made out of one quarter mesh which are used a great deal, however in most cases these tend to wear out after just having used them for a short period of time. Grizzlies need to be cleaned out very often because the larger stones tend to build a dam and hold the sand and gravel back and do not let it go inside the sluice. Almost all prospectors are very careful when it comes to cleaning these out, as it needs to be done carefully because there have been occasions in which nuggets have been found and as you may well know, nobody is looking into throwing out gold. Be careful when cleaning your grizzly out too, you may just find a surprise in it if you’re careful.
As far as gold panning is concerned, classifiers are used to part small gravel and allow it to go through into another container while it holds the bigger rocks that are then to be cautiously looked at and inspected to see if they have gold before they are thrown away. Small gravel is panned or some prospectors also run it through a sluice box to recover any fine gold that could be there. Sorting out and classifying the ore material like this helps to save you from a good amount of work given that otherwise it would be indispensable to pan or sluice all of the material, even the rock that is not of use.
There are many diverse types of classifiers that are made out of dissimilar materials and produced in different forms. One of the most common classifiers is a piece of screen that is somewhat heavy weight and it has holes in it. The holes of these classifiers vary in size as some go from one quarter of an inch and others are up to an inch. The classifier is preset firmly over a box no matter the size or shape as long as it has concrete side walls on it. The material from the pan can be positioned on the screen with the whole box arrangement shaken to force little bits of material to go through the screen and this then leaves the larger material on top to be retained or thrown away, depending obviously on the material that is left on the top that is. If the classifier is filled up too much you will notice there will be problems with the weight and that it will be complicated to kept it sturdy. If you do not have the precise size mesh or if the classifier does not fit the gold pan you may run into inconveniences and see that the concentrates may spill over and a lot of other issues here and there. There are prospectors that have put together their own classifiers, but in some cases they do not pay special attention to any specific size or shape that it equal.
A lot of the classifiers that were built by hand worked very well when classification in the size of the material was not particularly imperative. Just the thought of losing some gold, a gemstone or any precious metal because you do not have the accurate design is something that can lead to a lot of disappointment and evidently when this kind of thing takes place you could end up losing more than you would imagine.
