| Which building block of the ecosystem is one acting upon if one breaks up the hardpan crust? |
| Elsewhere the hardpan or bedrock must have been exceptionally level and near the top of the ground. |
| Depending on torque and speed of specific models, they can be used in conditions ranging from loose, heavy, or rocky soils to hardpan, frost, and asphalt. |
| Similarly, soils in a chronosequence developed on alluvium can exhibit a clayey hardpan after 100,000 years or so. |
| Has the power to rip apart asphalt and prepare the toughest hardpan for digging or landscaping. |
| For hardpan, shale, loose rock and similar materials, ample strength of teeth and dipper is of greater importance than its shape. |
