Channel samples consist of small chips of rock collected over a specified linear interval. The objective is to cut a linear channel across the vein or orebody for the most representative samples possible over the designated interval. Most of the time, chip channel samples are collected in succession along a sample line that is laid out in advance using a measuring tape and is designed to cross the area of interest. Often the chip channel samples are collected along surface trenches or the floors or walls of various underground workings.
Sample intervals are set at a specified width, usually ranging from 1 to 20 feet, commonly 5 feet. This allows for a representative sample to be acquired as the sample is not biased.
Sampuli za njia zina vipande vidogo vya mwamba vilivyokusanywa kwa muda fulani wa mstari. Lengo ni kukata mtiririko linear katika mshipa au orebody kwa sampuli zaidi ya uwakilishi iwezekanavyo juu ya muda maalum. Kwa kawaida, sampuli za chip channel hukusanywa kwa mfululizo kwenye mstari wa sampuli ambao umewekwa mapema kwa kutumia mkanda wa kupima na umebuniwa kuvuka eneo la maslahi. Mara nyingi sampuli za mfereji wa chip hukusanywa kando ya mitaro ya juu au sakafu au kuta za kazi mbalimbali za chini ya ardhi. Kipindi cha sampuli ni kuweka kwa upana maalum, kwa kawaida kuanzia 1 hadi 20 futi, kawaida 5 futi. Hii inaruhusu kwa ajili ya sampuli mwakilishi kuwa kupatikana kama sampuli si bias.