No, because the ash-the ash is pulverized rock-it can scratch up the windshield, too.

不行。因为火山灰是岩石微粒，也可以刮伤挡风玻璃。

youdao

U screw conveyor is suitable for conveying various powder, granulated and small lump materials, such as flour, corn, sand pulverized coal, cement, and all kinds of small pieces of coal and rock, etc.

型螺旋输送机适用于输送各种粉状，粒状及小块状物料，如面粉，谷物，砂土煤粉，水泥，及各类小块的煤和石子等。

youdao

Merrell spent five years "mentally" designing an oil shale "retort, " in which pulverized rock is baked, and vaporized oil extracted.

NPR: Squeezing Oil Out of Stones in the Rocky Mountains

Held in a scoop on the rover's mechanical arm, the tablespoon of pulverized gray rock offers planetary scientists their first sample from the planet's interior, where it may have been sheltered from the harsh surface chemistry and ultra-violet radiation.

WSJ: Rover on Mars Extracts First Rock-Core Sample

The ore is pulverized in a crusher that can smash 300 tons of rock per hour.

FORBES: The Treasure of the Sierra Madre