Either address may be correct except that Grover is in North Carolina, not South Carolina. The cemetery is about 1 mile from the NC/SC state line. It is closer to Grover, NC than Blackburg, SC. Elsie Hardin, who lives next to the cemetery did the survey I think, (If she is still living).
I was b. and reared in Grover, NC and have been to that cemetery many times. Interstate # 85 is about 2 miles from the cemetery.