by rolling with rollers usable only for or specially adapted for soil compaction, e.g. sheepsfoot rollers (rollers for soil working in agriculture A01B29/00; rollers for road paving, such rollers usable also for compacting soil E01C19/23)

Improving or preserving soil or rock, e.g. preserving permafrost soil > Improving by compacting > by rolling with rollers usable only for or specially adapted for soil compaction, e.g. sheepsfoot rollers

Improving or preserving soil or rock, e.g. preserving permafrost soil (securing of slopes or inclines E02D17/20; damming or interrupting passage of underground water E02D19/12; improving soil for agricultural purposes A01; soil stabilisation for road building or like purposes E01C21/00, E01C23/10; setting rock anchoring bolts E21D) > Improving by compacting (E02D3/11 takes precedence; compacting soil locally before or while forming foundations E02D27/26, E02D27/28) > by rolling with rollers usable only for or specially adapted for soil compaction, e.g. sheepsfoot rollers (rollers for soil working in agriculture A01B29/00; rollers for road paving, such rollers usable also for compacting soil E01C19/23)