Injury experience in quarrying industry, 1954

Machisak, J.C. / Kearney, N.W. | Engineering Index Backfile | 1958

Injury experience in quarrying, 1959

Glidden, Z.S. / Wrenn, V.E. / Machisak, J.C. et al. | Engineering Index Backfile | 1963

Injury experience in quarrying, 1958

Machisak, J.C. / Wrenn, V.E. / Kearney, N.W. et al. | Engineering Index Backfile | 1962

Injury experience in quarrying, 1957

Macisak, J.C. / Kearney, N.W. / Glidden, Z.S. | Engineering Index Backfile | 1960

Injury experience in quarrying, 1960

Machisak, J.C. / Wrenn, V.E. / Kearney, N.W. et al. | Engineering Index Backfile | 1963