Below are some possible related Ontario mining accident records that I found:

Date of Accident / Name of Person / Colliery (Town) / F=Fatal or N=Nonfatal / Page / Report Year / Reference

1938JAN26 FRASER, DONALD 37 HOLLINGER F 4 & 22 1938 ONT B121
1935NOV18 FRASER, IRA McINTYRE N 28 1935 ONT B102
1944NOV10 LALONDE, ALBERT 27 ROGERS F 4 & 42 1944 ONT B136
1957JUN18 LALONDE, ANDREW J 30 LEVACK F 6 & 31 1957 ONT B154
1930MAR6 LALONDE, CAMILE C LALONDE N 45 1930 ONT B075
1934FEB10 LALONDE, D 29 LAKE SHORE F 22 1934 ONT B097
1934FEB10 LALONDE, D 29 LAKE SHORE F 4 1934 ONT B097
1908DEC9 LALONDE, E Temagami Gold Reefs N 67 1909 ONT
1908DEC9 LALONDE, E TEMAGAMI Gold Reefs F 70 1909 ONT
1952AUG5 LALONDE, GAETAN 22 FALCONBRIDGE F 4 & 20 1952 ONT B146
1941MAR29 LALONDE, W H 20 BROCK F 4 & 22 1941 ONT B132


If any of the above are of interest to you, get back with me. I do have a little more information about these specific accidents.

from Jerry