Gases in street manholes

✍ Scribed by S.H. Katz; E.G. Meiter; J.J. Bloomfield

• Book ID: 104125788
• Publisher: Elsevier Science
• Year: 1925
• Tongue: English
• Weight: 112 KB
• Volume: 200
• Category: Article
• ISSN: 0016-0032
• DOI: 10.1016/s0016-0032(25)90738-7

✦ Synopsis

Nov.. I9z5.] U.S. BUREAU OF MryES NOTES. 683 footage obtained per bit by more than 50 per cent. and reduce the drilling time per foot by a third of that obtained when bits are treated in an open fire without temperature control and quenched under conditions that vary from time to time. Further details are presented in Serial 2712. GASES IN STREET MANHOLES.