Helen Reeder Cross grew up as the daughter of a copper mine manager in the mountains of Tennessee. This book is a thinly fictionalized account of her childhood experiences, living in a tiny community of mining engineers, working Isabella Mine, near enough to communities of "mountain people" and yet completely socially separate from them. The book is set in the years 1929-1930 and is full of period details, and gentle episodic accounts of everyday life. Published in 1982, it reads a lot like something that might've been published forty years earlier. The main thread is Molly's on-again off-again jealousy of her friend Kate, the only other girl her age at Isabella Mine, and thus her friend per force rather than inclination. I quite enjoyed it.
We hear a bit about the environmental devastation wrought by the mine in a matter of fact way; it's something Molly takes for granted, and doesn't think much about. But if you google "Isabella Mine" one sees it's actually quite horrifying -- the denuded scar on the land can still be seen from space to this day.