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<HTML><HEAD><TITLE>ES&E May 98 Contents</TITLE></HEAD> <BODY BGCOLOR="#FFFFFF" TEXT="#191970">  <CENTER><TABLE BORDER="0" CELLSPACING="0"><TR><TD COLSTART="1"><A HREF="../../index.html"><IMG ALIGN="TOP" SRC="../../esegifs/home.gif" BORDER="0" WIDTH="70" HEIGHT="22"></A></TD><TD COLSTART="2" ROWSPAN="2" ALIGN="CENTER" WIDTH="285"><IMG ALIGN="BOTTOM" SRC="../../esegifs/eseheadf.gif" WIDTH="279" HEIGHT="51"></TD><TD COLSTART="3"><A HREF="../../issues/issues.html"><IMG ALIGN="BOTTOM" SRC="../../esegifs/past_iss.gif" BORDER="0" WIDTH="70" HEIGHT="22"></A></TD></TR><TR><TD COLSTART="1"><A HREF="../../forms/subscrib.html"><IMG ALIGN="BOTTOM" SRC="../../esegifs/subscrib.gif" BORDER="0" WIDTH="70" HEIGHT="22"></A></TD><TD COLSTART="3"><A HREF="../industry/indnews.html"><IMG ALIGN="BOTTOM" SRC="../../esegifs/update.gif" BORDER="0" WIDTH="70" HEIGHT="22"></A></TD></TR></TABLE></CENTER> <HR> <CENTER><H2>May 1998</H2> <H2>Contents:</H2></CENTER> <HR> <SMALL> <P><A HREF="../0598ed.html">Engineering, still the invisible profession in a world driven by the low bid. <I>Editorial by Tom Davey</I></a></P> <P><A HREF="../vacuum.html">Neighbour's 'hell' is vacuum noise  but UK scientist may have a solution</a></P> <P>Concrete pipe manufacturing technology from 1842 to beyond 2000</P> <P>Reducing packaging waste has powerful economic impacts</P> <P>Toronto conference attracts 900 delegates</P> <P>1998 AWWA Annual Conference</P> <P>Paste technology proves practical for surface disposal of mineral wastes</P> <P>Environmental information systems for tailings management</P> <P>Our aquatic environments continue to be invaded by alien species in ballast waters</P> <P>New PCB Recycling Plant slated for Kirkland Lake, Ontario</P> <P>Air quality goes up as NOx goes down</P> <P>A possible cure for sick building syndrome?</P> <P>Ozone can now be used for wastewater and potable water</P> <P>Prevention of scale build-up using electronic descaling technology</P> <P>Effective colour and TOC removal from drinking water by microfiltration</P> <P>Ottawa-Carleton investigates factors that influence biosolids dewatering</P> <P>Biosolids stabilization research continues in Ontario</P> <P>Extreme abundances of viruses in prairie wetlands</P> <P><B>Focus on Tanks</B></P> <P>The strength of steel and its importance in environmental protection</P> <P>Selecting a tank for used lubricating oil</P> <P><A HREF="../fibrglas.html">Fiberglass reinforced plastic tanks for corrosive environments</a></P> </SMALL> <HR> </BODY>