 SAN ANTONIO--BUSINESS WIRE--NuStar Energy L.P. NYSE: NS today announced that it will host a conference call on Thursday, August 5, 2021 at 9:00 a.m. Central Time to discuss the second quarter 2021 earnings results, which will be released earlier that day. The conference call may be accessed by dialing toll-free 844889-7787, reservation passcode 5176327. International callers may access the conference call by dialing 661378-9931, reservation passcode 5176327. The partnership intends to hav 