| 21. | He pointed to a big seed placed on moist vermiculite.
|
| 22. | You can usually identify vermiculite just by looking at it,
|
| 23. | Grace operated the Libby vermiculite mine north of town for 27 years.
|
| 24. | The Vermiculite Association : http : / / www . vermiculite . org
|
| 25. | The Vermiculite Association : http : / / www . vermiculite . org
|
| 26. | The coir is usually mixed with vermiculite and pasteurised with boiling water.
|
| 27. | Most potting composts contain a combination of peat and vermiculite or perlite.
|
| 28. | But mining the vermiculite has released the deadly asbestos fibers into the air.
|
| 29. | We climbed and slid on the piles of vermiculite.
|
| 30. | Some of Grace's vermiculite products sold like mad, he said.
|
