Davidson Ditch
... that Davidson Ditch was inspected by engineers working on problems faced by the Trans-Alaska Pipeline?
... that <b id="mwEik"><a href="./Davidson_Ditch" id="mwEio" rel="mw:WikiLink" title="Davidson Ditch">Davidson Ditch</a></b> was inspected by engineers working on problems faced by the <a class="mw-redirect" href="./Trans-Alaska_Pipeline" id="mwEis" rel="mw:WikiLink" title="Trans-Alaska Pipeline">Trans-Alaska Pipeline</a>?