soil sample taken intact from below the ground surface, using methods such as cable percussion boring, soil sample that is as undisturbed as humanly possible, as distinct from a sample disturbed by boring tools, mullaproov, mis on võetud maapinna alt mulla looduslikus seisundis, mullaproov, mis on võetud puutumata maapinna alt ja on nii häirimatu kui inimlikult võimalik, erinedes tavaliste tööriistade poolt häiritud proovist