Thanks to Mark’s experience in surveying, he began to be used to do surveying for branch buildings and Assembly Halls of Jehovah’s Witnesses in South and Central America and the islands of the Caribbean.
त्यांनी जून १९८१ साली हे बांधकाम पूर्ण होईपर्यंत त्या प्रकल्पावर जॉर्जटाऊन येथे काम केले.