law: The Oriental Gas Company Act No. 1857
  3. NoticeĀ to beĀ served
  
  onĀ persons having control, etc., beforeĀ breaking upĀ streetsĀ orĀ openingĀ
  
  drains.-
  Before theĀ said
  
  CompanyĀ proceed toĀ open orĀ break upĀ and street,Ā bridge, sewer,Ā drain, orĀ
  
  tunnel, they shall give to the Municipal Commissioners for the Town of
  
  Calcutta, orĀ other persons under whose control or management the same may be,Ā
  
  or toĀ their Clerk,Ā Surveyor, orĀ other officer,Ā noticeĀ in writing of their
  
  intention to open or break up the same, not less thanĀ three clearĀ days
  
  beforeĀ beginning suchĀ work;Ā exceptĀ inĀ casesĀ ofĀ emergency arising from
  
  defects in any of the pipes or other works, and then soĀ soon asĀ is possibleĀ
  
  after the beginning of the work, or the necessity for the same shall have
  
  arisen.