994 LAWS OF

20. Epitheliomatous cancer
or ulceration of the skin
or the corneal surface of
the eye, due to pitch, tar,
bitumen, mineral oil, or
paraffin, or any com-
pound, product or residue
of any of these substances.
21. Glanders.

22. Compressed air illness or
its sequelae.

23. Miners' diseases, includ-
ing only cellulitis, bur-
sitis, ankylotomiasis, te-
nosynovitis and nystag-
mus.

24. Cataract in glassworkers.

25. Radium poisoning or dis-
ability due to radioactive
properties of substances
or to roentgen rays
(X-rays).

26. Poisoning from methyl
chloride or other halo-
genated hydrocarbons.

27. Carbon monoxide poison-
ing.

28. Poisoning by sulphuric,
hydro-chloric or hydro-
fluoric acid.

29. Respiratory, gastro-intes-
tinal or physiological
nerve and eye disorders

MARYLAND. [CH. 465

20. Any process or occupation
involving the use of or di-
rect contact with tar, pitch,
bitumen, mineral, oil, or
pariffin or any compound,
product or residue of any of
these substances.

21. Care or handling of any
equine animal or the carcass
of any such animal.

22. Any process or occupation
carried on in compressed
air.

23. Any process or occupation
in connection with mining
or underground work.

24. Process in the manufacture
of glass involving exposure
to the glare of molten glass.
25. Any process or occupation
involving the use of or di-
rect contact with radium or
radioactive substances or
the use of or direct exposure
to roentgen rays (X-rays).

26. Any process or occupation
involving the use of or di-
rect contact with methyl
chloride or other haloge-
nated hydrocarbons.

27. Any process or occupation
involving direct exposure to
carbon monoxide in build-
ings, sheds, or enclosed
places.
28. Any process or occupation
involving the use of or di-
rect contact with sulphuric,
hydro-chloric or hydro-flu-
oric acids or their fumes.
29. Any process or occupation
involving the use of or di-
rect contact with petroleum