Used as a lubricant and as a moderator in nuclear reactors.
1 The blue garden was particularly lovely with its background of plumbago .
2 There is therefore reason to believe that this plumbago had been in fusion.
3 Er de plumbago or de typhoid er de yaller fever sometimes.
4 The copper is melted first in a plumbago crucible; the tin is added gradually.
5 His father made lead pencils and ground plumbago in his own house in Concord.
6 In the vicinity of Seatoller is the celebrated mine of plumbago , or black lead.
7 The surface of this impression is coated with powdered plumbago .
8 Her list of mineral treasures includes gold, copper, iron, lead, plumbago , coal, and salt.
9 Since the discovery of plumbago in the district, Keswick has been famed for its lead-pencils.
10 The friction surfaces of the eccentric and spring may be lubricated with tallow and plumbago .
11 It somewhat resembles plumbago , with which it is sometimes diluted, particularly when it is fine.
12 The rollers are coated with plumbago or other material to prevent adhesion to the molten metal.
13 Further on, giant chrysanthemum blooms were massed beneath the clusters of pale plumbago - flowers on the trellis.
14 The minerals proved to exist up to the present time are gold, quicksilver, plumbago and iron.
15 So she and Sarath would go now to the villages in the region where there were plumbago - graphite mines.
16 The greatest standby to the amateur gardener should undoubtedly be the blue-flowered shrub known as " plumbago " .
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