Timeline for Why did NASA wet the road in front of the Space Shuttle crawler?
Current License: CC BY-SA 4.0
6 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jul 17, 2020 at 8:52 | comment | added | uhoh | From Silicosis "Silicosis resulted in 46,000 deaths globally in 2013, down from 55,000 deaths in 1990." and "Because of work-exposure to silica dust, silicosis is an occupational hazard to construction, demolition, mining, sandblasting, quarry, tunneling, ceramics and foundry workers, as well as grinders, stone cutters, stone countertops, refractory brick workers, tombstone workers, workers in the oil and gas industry, pottery workers, fiberglass manufacturing, glass manufacturing, flint knappers and others." | |
| Jul 17, 2020 at 3:54 | comment | added | ikrase | Do these guys wear masks? | |
| Jul 17, 2020 at 2:56 | review | Late answers | |||
| Jul 17, 2020 at 8:54 | |||||
| Jul 17, 2020 at 2:37 | comment | added | Joe Devlin | Also, yes the rock is occasionally “raked” with a road grater. | |
| Jul 17, 2020 at 2:35 | review | First posts | |||
| Jul 17, 2020 at 7:55 | |||||
| Jul 17, 2020 at 2:35 | history | answered | Joe Devlin | CC BY-SA 4.0 |