11. Stahle and Matthew D . Therrell, a fellow dendrochronologist, started taking test borings . 12. "We've already been out there doing test borings and drawing building permits. 13. State engineers collected 135 samples from more than 46 soil borings between May and August. 14. The first experimental borings at the site began in 1902, and continued until 1908. 15. Macrobioerosion, which produces borings visible to the naked eye, shows two distinct evolutionary radiations. 16. Their club-shaped borings are given the trace fossil name " Gastrochaenolites ". 17. The station was built on an plot of land acquired as a result of tidal borings . 18. Some of the petrified wood at this site bear the borings made by ancient ship worms. 19. The depressions are not symmetrical enough for gastropod drill marks and are not shaped like sponge borings . 20. We had a structural engineer do borings into the footings, and we had to add support there,
