Rubuta ci gaba don wannan sakin layi - 1960s1970s: Lin ya ci gaba da fadada ƙwarewar kamfaninsa a cikin simintin da aka riga aka ƙaddara zuwa sabis na ba da shawara mafi girma, tare da ayyukan da suka haɗa da simintin gyare-gyare na al'ada, ƙarfe na tsarin, masonry, da tsarin katako. A cikin 1967, ya tsara bangon bango mai hawa 18 na Bank of America a Managua, Nicaragua. Hasumiyar da aka gina da siminti mai ƙarfi tana ɗaya daga cikin gine-gine biyu da suka rage a tsaye bayan girgizar ƙasar da ta auku a ƙasar a shekara ta 1972
Ka yi haƙuri. Lin kuma ya zama sananne ga sababbin abubuwan da ya kirkira, kamar Rio Colorado Bridge, gada mai ratayewa da ke jujjuyawa a kan wani rami mai zurfi a Costa Rica. A farkon shekarun '70, kamfanin ya kuma kafa ofisoshinsa a Taiwan da Singapore.