930 LAWS OF MARYLAND. [CH. 331

(1) The operation, including construction and repair, of
railways operated by steam, electric or other motive power,
street railways and incline railways, but not in their con-
struction when constructed by any person other than the com-
pany which owns or operates the railways, including work
of express, sleeping, parlor and dining car employees on rail-
way trains.

(2) Construction and operation of railways not included
in paragraph 1.

(3) The operation, including construction and repair, of
car shops, machine shops, steam and power plants, and other
works for the purposes of any such railway, or used or to be
used in connection with it when operated, constructed or re-
paired by the company which owns or operates the railway.

(4) The operation, including construction and repair, of
car shops, machine shops, steam and power plants, not included
in paragraph 3.

(5) The operation, including construction and repair, of
telephone lines and wires for the purposes of the business of
a telephone company, or used or to be used in connection with
its business, when constructed or operated by the company.

(6) The operation, including construction and repair, of
telegraph lines and wires for the purposes of the business of
a telegraph company, or used or to be used in connection with
its business, when constructed or operated by the company

(7) Construction of telegraph and telephone lines not in-
cluded in paragraphs 5 and 6.

(8) The operation, within or without the state, including
repair, of vessels other than vessels of other states or countries
used in interstate or foreign commerce, when operated or re-
paired by the company.

(9) Shipbuilding, including construction and repair in a
ship yard or elsewhere, not included in paragraph 8.

(10) Longshore work, including the loading or unloading
of cargoes or parts of cargoes of grain, coal, ore, freight, gen-
eral merchandise, lumber or other products or materials, or
moving or handling the same on any dock, platform or place,
or in any warehouse or other place of storage.

(11) Subaqueous or caisson construction and pile driving.