Coal-mine Accidents in the United States, 1940

---

Coal-mine Accidents in the United States, 1940

---

Coal-mine Accidents in the United States, 1940

---

Metal- and Nonmetal-mine Accidents in the United States During the Calendar Year 1940

---

Metal- and Nonmetal-mine Accidents in the United States During the Calendar Year 1940

---

Accidents in Tennessee Coal Mines, 1891-1940

---

Coal-mine Explosions and Coal- and Metal-mine Fires in the United States During the Fiscal Year Ended June 30, 1940

---

Coal-mine Accidents in the United States, 1932

---

Coal-mine Accidents in the United States, 1931

---

Coal-mine Accidents in the United States, 1941

---