| Malignant fibrous histiocytomas and fibrosarcomas do not contain osteoid or bone and are typically high-grade lesions. |
| At first, miners separated high-grade ore from waste rock underground by hand. |
| During this time, Zeiss has been a leader in improving the quality and performance of high-grade optical equipment. |
| At times mining operations had to cease as hundreds of illegal miners entered the pits to steal freshly blasted high-grade ore. |
| Typically an acrylic tub is crafted from a mixture of high-grade sanitary acrylics, ceramic powders, polyester resins, and fiberglass. |
| He specializes in the recovery of gemstones and mineral specimens and in the exploitation of high-grade ore deposits. |
