My best solutions for 2018 to get rid of trimmings is simple
- Make a quarry and save all you materials you get from making it (quarry should be relatively larger about 10x10 and personally 30 blocks deep)( this method should be used for people with help from others)
- Dig a hole near your home or make a smeltery elsewhere.
- Last method and possibly the economical is making an above ground warehouse made of mortarted stone (dimensions 30x20x10 lengthxwidthxheight) but make it in a flat area with no sources of water or vegetationand fill it with stockpiles best areas to do this is in the desert.
just so people know like my self mortared stone and brick no longer stop ground pollution spread at all...
as of 2018 I have a ware house underground with 4 layer thick mortared stone with brick inside of that and the its all showing pollution levels of 180% its one stack of tailings on one stockpile only and its spreading across everything just mutiplying rapidly ground level is.