01683oam 2200445 450 991014954030332120190911103515.01-4824-5786-5(OCoLC)962394473(MiFhGG)GVRL05DA(EXLCZ)99371000000093396620170621h20172017 uy 0engurun|---uuuuatxtrdacontentcrdamediacrrdacarrierEarth borers /by Ryan NagelhoutFirst edition.New York :Gareth Stevens Publishing,2017.�20171 online resource (32 pages) color illustrations, mapsTechnology Takes on Nature Includes index.1-4824-5785-7 Intro -- Title Page -- Copyright Page -- Contents -- Saving Bertha -- Going Under -- Protecting the Tunnel -- Launching Bertha -- Watching Closely -- Under the Alps -- The Chunnel -- Digging into Trouble -- Scrap or Bury? -- Pushing Through -- Glossary -- For More Information -- Index.In this book, readers will dig deep underground with these massive machines to learn how they chew up rocks and dirt and help engineers build new things far below Earth's surface.Technology takes on nature.Earthmoving machineryExcavating machineryEarthmoving machinery.Excavating machinery.621.865Nagelhout Ryan1244394MiFhGGMiFhGGBOOK9910149540303321Earth Borers3408034UNINA