NEW : Obama supports recovery of well , says recovery efforts continue . BP well ` ` ' no continuing threat , '' the government 's point man . BP begins final cementing work to cap Gulf well on site . Environmental and economic recovery lie ahead .
NEW : Obama hails capping of well , says recovery efforts continue . BP well `` poses no continuing threat , '' says government 's point man . BP began final cementing operation to cap Gulf well on Friday . Environmental and economic recovery lie ahead .