http://www.marketwire.com/press-release/East-Asia-Minerals-Corporation-TSX-VENTURE-EAS-1013600.html

There are two types of channel samples we have been reporting from Miwah:

1. Rock sawn channel samples were collected from the main Miwah Bluff and Block M to the east. Because the rock is exposed in the cliff our geologists are able to actually saw a channel in the rock and remove a continuous sample over the length of the channel. The channel is about 3 inches wide and about 1-2 inches deep. I have attached a picture of this type of sampling.
2. Samples reported in the June 3 press release from the South Miwah area were rock chip channel sampling. With this type of channel sample an area of sub-cropping rock is cleared of dirt and vegetation. The length and width would depend on how much rock can be exposed and it would vary from channel to channel. Geologists would then chip a continuous as possible sample from the exposed rock using hammers and chisels. The goal is to get as representative sample as possible and roughly the same size as the rock sawn channel sample (2-3 inches wide by 1-2 inches deep). The size of the sample would vary but on average a channel sample over 1 metre would be 2-5 pounds. This sample would be sent to an assay lab where it is crushed and pulverized. 50 grams of the rock powder is ICP AA/fire assayed. The higher grade samples are re-tested. All results are checked against a series of standards to insure they are statistically correct.