| Ashes, dry -------------------------------------------------- |
33 |
| Ashes, moist----------------------------------------------- |
36 |
| Ashes, wet-------------------------------------------------- |
30 |
| Asphalt------------------------------------------------------- |
45 |
| Clinders, dry------------------------------------------------ |
33 |
| Clinders, moist--------------------------------------------- |
34 |
| Clinders, wet----------------------------------------------- |
31 |
| Clinders and Clay--------------------------------------- |
30 |
| Clay----------------------------------------------------------- |
45 |
| Coal, hard-------------------------------------------------- |
24 |
| Coal, soft--------------------------------------------------- |
30 |
| Coke---------------------------------------------------------- |
23 |
| Concrete---------------------------------------------------- |
30 |
| Earth, loose----------------------------------------------- |
28 |
| Earth, impact--------------------------------------------- |
50 |
| Garbage---------------------------------------------------- |
30 |
| Gravel-------------------------------------------------------- |
40 |
| Ore, dry ----------------------------------------------------- |
30 |
| Ore, damp-------------------------------------------------- |
37 |
| Rubble------------------------------------------------------- |
45 |
| Sand, dry--------------------------------------------------- |
35 |
| Sand, damp----------------------------------------------- |
40 |
| Sand, with crushed stone-------------------------- |
27 |
| Stone--------------------------------------------------------- |
30 |
| Stone, broken-------------------------------------------- |
27 |
| Stone, crushed------------------------------------------ |
30 |